HOMEBREW Digest #6065 Tue 26 November 2013
FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: pbabcock at hbd.org
***************************************************************
TODAY'S HOME BREW DIGEST BROUGHT TO YOU BY:
No "sponsor-level" donation yet this year
Support those who support you! Visit our sponsor's site!
********** Also visit http://hbd.org/hbdsponsors.html *********
DONATE to the Home Brew Digest. Home Brew Digest, Inc. is a
501(c)3 not-for-profit organization under IRS rules (see the
FAQ at http://hbd.org for details of this status). Donations
can be made by check to Home Brew Digest mailed to (NOTE NEW
ADDRESS):
HBD Server Fund
PO Box 871054
Canton, MI 48187-6054
or by paypal to address serverfund@hbd.org. DONATIONS of $250
or more will be provided with receipts. SPONSORSHIPS of any
amount are considered paid advertisement, and may be deductible
under IRS rules as a business expense. Please consult with your
tax professional, then see http://hbd.org for available
sponsorship opportunities.
***************************************************************
Contents:
ph meters (Matthew Brooks)
Sanitizer pH ("A. J. deLange")
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Beer is our obsession and we're late for therapy! *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Home Brew Digest, Inc. is a 501(c)3 Public Charity
[170(b)(1)(A)(vi)] All donations & gifts to the HBD are
tax deductible under section 170 of the Internal Revenue
Code; as are bequests, devises, transfer, or gifts under
section 2055, 2106, or 2522 of the Code.
Financial Projection as of 31 May 2013
*** Condition: Cautiously Optimistic ***
501(c)3 status reistated.
Projected 2012 Budget $3,145.01
Expended against projection $1,586.99
Unplanned expenditures ($ 152.00)
Projected Excess/(Shortfall) ($ 89.84)
As always, donors and donations are publicly acknowledged
and accounted for on the HBD web page. Thank you.
Send articles for __publication_only__ to post@hbd.org
If your e-mail account is being deleted, please unsubscribe first!!
To SUBSCRIBE or UNSUBSCRIBE send an e-mail message with the word
"subscribe" or "unsubscribe" to request@hbd.org FROM THE E-MAIL
ACCOUNT YOU WISH TO HAVE SUBSCRIBED OR UNSUBSCRIBED!!!**
IF YOU HAVE SPAM-PROOFED your e-mail address, you cannot subscribe to
the digest as we cannot reach you. We will not correct your address
for the automation - that's your job.
HAVING TROUBLE posting, subscribing or unsusubscribing? See the HBD FAQ at
http://hbd.org.
LOOKING TO BUY OR SELL USED EQUIPMENT? Please do not post about it here. Go
instead to http://homebrewfleamarket.com and post a free ad there.
The HBD is a copyrighted document. The compilation is copyright
HBD.ORG. Individual postings are copyright by their authors. ASK
before reproducing and you'll rarely have trouble. Digest content
cannot be reproduced by any means for sale or profit.
More information is available by sending the word "info" to
req@hbd.org or read the HBD FAQ at http://hbd.org.
JANITORs on duty: Pat Babcock (pbabcock at hbd dot org), Jason Henning,
Spencer Thomas, and Bill Pierce
----------------------------------------------------------------------
Date: Mon, 25 Nov 2013 21:15:50 -0500
From: Matthew Brooks <mabrooks12 at icloud.com>
Subject: ph meters
Unless you have a water that is unusually high in alkalinity ( and I mean
really high) I wouldn't think that you should have a worry about using a pH
meter to verify. As long as you are using the recommended amounts per the
manufacturer. They usually account for moderate buffer capacity (AKA -
alkalinity) of most us waters when determining amounts needed to achieve the
desired pH!
Sent from my iPad
------------------------------
Date: Tue, 26 Nov 2013 00:35:20 -0500
From: "A. J. deLange" <ajdel at verizon.net>
Subject: Sanitizer pH
One of the popular sanitizers (I think it is Saniclean) is basically
DDBSA with phosphoric acid used to establish the proper working pH (i.e.
the pH at which a large enough fraction of the ionizable group on the
DDBSA are not dissociated such that the DDBSA can disrupt the bacterial
cell membranes). This could easily be verified with a pH meter.
------------------------------
End of HOMEBREW Digest #6065, 11/26/13
*************************************
-------
Tuesday, November 26, 2013
Monday, November 25, 2013
Homebrew Digest #6064 (November 25, 2013)
HOMEBREW Digest #6064 Mon 25 November 2013
FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: pbabcock at hbd.org
***************************************************************
TODAY'S HOME BREW DIGEST BROUGHT TO YOU BY:
No "sponsor-level" donation yet this year
Support those who support you! Visit our sponsor's site!
********** Also visit http://hbd.org/hbdsponsors.html *********
DONATE to the Home Brew Digest. Home Brew Digest, Inc. is a
501(c)3 not-for-profit organization under IRS rules (see the
FAQ at http://hbd.org for details of this status). Donations
can be made by check to Home Brew Digest mailed to (NOTE NEW
ADDRESS):
HBD Server Fund
PO Box 871054
Canton, MI 48187-6054
or by paypal to address serverfund@hbd.org. DONATIONS of $250
or more will be provided with receipts. SPONSORSHIPS of any
amount are considered paid advertisement, and may be deductible
under IRS rules as a business expense. Please consult with your
tax professional, then see http://hbd.org for available
sponsorship opportunities.
***************************************************************
Contents:
Re: pH meters (Jon Fischer)
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Beer is our obsession and we're late for therapy! *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Home Brew Digest, Inc. is a 501(c)3 Public Charity
[170(b)(1)(A)(vi)] All donations & gifts to the HBD are
tax deductible under section 170 of the Internal Revenue
Code; as are bequests, devises, transfer, or gifts under
section 2055, 2106, or 2522 of the Code.
Financial Projection as of 31 May 2013
*** Condition: Cautiously Optimistic ***
501(c)3 status reistated.
Projected 2012 Budget $3,145.01
Expended against projection $1,586.99
Unplanned expenditures ($ 152.00)
Projected Excess/(Shortfall) ($ 89.84)
As always, donors and donations are publicly acknowledged
and accounted for on the HBD web page. Thank you.
Send articles for __publication_only__ to post@hbd.org
If your e-mail account is being deleted, please unsubscribe first!!
To SUBSCRIBE or UNSUBSCRIBE send an e-mail message with the word
"subscribe" or "unsubscribe" to request@hbd.org FROM THE E-MAIL
ACCOUNT YOU WISH TO HAVE SUBSCRIBED OR UNSUBSCRIBED!!!**
IF YOU HAVE SPAM-PROOFED your e-mail address, you cannot subscribe to
the digest as we cannot reach you. We will not correct your address
for the automation - that's your job.
HAVING TROUBLE posting, subscribing or unsusubscribing? See the HBD FAQ at
http://hbd.org.
LOOKING TO BUY OR SELL USED EQUIPMENT? Please do not post about it here. Go
instead to http://homebrewfleamarket.com and post a free ad there.
The HBD is a copyrighted document. The compilation is copyright
HBD.ORG. Individual postings are copyright by their authors. ASK
before reproducing and you'll rarely have trouble. Digest content
cannot be reproduced by any means for sale or profit.
More information is available by sending the word "info" to
req@hbd.org or read the HBD FAQ at http://hbd.org.
JANITORs on duty: Pat Babcock (pbabcock at hbd dot org), Jason Henning,
Spencer Thomas, and Bill Pierce
----------------------------------------------------------------------
Date: Sun, 24 Nov 2013 16:46:51 -0800 (PST)
From: Jon Fischer <fischjon at yahoo.com>
Subject: Re: pH meters
Would anyone recommend using pH measurements as a way to verify
that sanitizers (e.g. sani-clean) are acidic enough?
or that cleaners (e.g. pbw) are basic enough?
fischjon in Indiana
------------------------------
End of HOMEBREW Digest #6064, 11/25/13
*************************************
-------
FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: pbabcock at hbd.org
***************************************************************
TODAY'S HOME BREW DIGEST BROUGHT TO YOU BY:
No "sponsor-level" donation yet this year
Support those who support you! Visit our sponsor's site!
********** Also visit http://hbd.org/hbdsponsors.html *********
DONATE to the Home Brew Digest. Home Brew Digest, Inc. is a
501(c)3 not-for-profit organization under IRS rules (see the
FAQ at http://hbd.org for details of this status). Donations
can be made by check to Home Brew Digest mailed to (NOTE NEW
ADDRESS):
HBD Server Fund
PO Box 871054
Canton, MI 48187-6054
or by paypal to address serverfund@hbd.org. DONATIONS of $250
or more will be provided with receipts. SPONSORSHIPS of any
amount are considered paid advertisement, and may be deductible
under IRS rules as a business expense. Please consult with your
tax professional, then see http://hbd.org for available
sponsorship opportunities.
***************************************************************
Contents:
Re: pH meters (Jon Fischer)
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Beer is our obsession and we're late for therapy! *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Home Brew Digest, Inc. is a 501(c)3 Public Charity
[170(b)(1)(A)(vi)] All donations & gifts to the HBD are
tax deductible under section 170 of the Internal Revenue
Code; as are bequests, devises, transfer, or gifts under
section 2055, 2106, or 2522 of the Code.
Financial Projection as of 31 May 2013
*** Condition: Cautiously Optimistic ***
501(c)3 status reistated.
Projected 2012 Budget $3,145.01
Expended against projection $1,586.99
Unplanned expenditures ($ 152.00)
Projected Excess/(Shortfall) ($ 89.84)
As always, donors and donations are publicly acknowledged
and accounted for on the HBD web page. Thank you.
Send articles for __publication_only__ to post@hbd.org
If your e-mail account is being deleted, please unsubscribe first!!
To SUBSCRIBE or UNSUBSCRIBE send an e-mail message with the word
"subscribe" or "unsubscribe" to request@hbd.org FROM THE E-MAIL
ACCOUNT YOU WISH TO HAVE SUBSCRIBED OR UNSUBSCRIBED!!!**
IF YOU HAVE SPAM-PROOFED your e-mail address, you cannot subscribe to
the digest as we cannot reach you. We will not correct your address
for the automation - that's your job.
HAVING TROUBLE posting, subscribing or unsusubscribing? See the HBD FAQ at
http://hbd.org.
LOOKING TO BUY OR SELL USED EQUIPMENT? Please do not post about it here. Go
instead to http://homebrewfleamarket.com and post a free ad there.
The HBD is a copyrighted document. The compilation is copyright
HBD.ORG. Individual postings are copyright by their authors. ASK
before reproducing and you'll rarely have trouble. Digest content
cannot be reproduced by any means for sale or profit.
More information is available by sending the word "info" to
req@hbd.org or read the HBD FAQ at http://hbd.org.
JANITORs on duty: Pat Babcock (pbabcock at hbd dot org), Jason Henning,
Spencer Thomas, and Bill Pierce
----------------------------------------------------------------------
Date: Sun, 24 Nov 2013 16:46:51 -0800 (PST)
From: Jon Fischer <fischjon at yahoo.com>
Subject: Re: pH meters
Would anyone recommend using pH measurements as a way to verify
that sanitizers (e.g. sani-clean) are acidic enough?
or that cleaners (e.g. pbw) are basic enough?
fischjon in Indiana
------------------------------
End of HOMEBREW Digest #6064, 11/25/13
*************************************
-------
Thursday, November 21, 2013
Homebrew Digest #6063 (November 21, 2013)
HOMEBREW Digest #6063 Thu 21 November 2013
FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: pbabcock at hbd.org
***************************************************************
TODAY'S HOME BREW DIGEST BROUGHT TO YOU BY:
No "sponsor-level" donation yet this year
Support those who support you! Visit our sponsor's site!
********** Also visit http://hbd.org/hbdsponsors.html *********
DONATE to the Home Brew Digest. Home Brew Digest, Inc. is a
501(c)3 not-for-profit organization under IRS rules (see the
FAQ at http://hbd.org for details of this status). Donations
can be made by check to Home Brew Digest mailed to (NOTE NEW
ADDRESS):
HBD Server Fund
PO Box 871054
Canton, MI 48187-6054
or by paypal to address serverfund@hbd.org. DONATIONS of $250
or more will be provided with receipts. SPONSORSHIPS of any
amount are considered paid advertisement, and may be deductible
under IRS rules as a business expense. Please consult with your
tax professional, then see http://hbd.org for available
sponsorship opportunities.
***************************************************************
Contents:
pH meters (Matthew Brooks)
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Beer is our obsession and we're late for therapy! *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Home Brew Digest, Inc. is a 501(c)3 Public Charity
[170(b)(1)(A)(vi)] All donations & gifts to the HBD are
tax deductible under section 170 of the Internal Revenue
Code; as are bequests, devises, transfer, or gifts under
section 2055, 2106, or 2522 of the Code.
Financial Projection as of 31 May 2013
*** Condition: Cautiously Optimistic ***
501(c)3 status reistated.
Projected 2012 Budget $3,145.01
Expended against projection $1,586.99
Unplanned expenditures ($ 152.00)
Projected Excess/(Shortfall) ($ 89.84)
As always, donors and donations are publicly acknowledged
and accounted for on the HBD web page. Thank you.
Send articles for __publication_only__ to post@hbd.org
If your e-mail account is being deleted, please unsubscribe first!!
To SUBSCRIBE or UNSUBSCRIBE send an e-mail message with the word
"subscribe" or "unsubscribe" to request@hbd.org FROM THE E-MAIL
ACCOUNT YOU WISH TO HAVE SUBSCRIBED OR UNSUBSCRIBED!!!**
IF YOU HAVE SPAM-PROOFED your e-mail address, you cannot subscribe to
the digest as we cannot reach you. We will not correct your address
for the automation - that's your job.
HAVING TROUBLE posting, subscribing or unsusubscribing? See the HBD FAQ at
http://hbd.org.
LOOKING TO BUY OR SELL USED EQUIPMENT? Please do not post about it here. Go
instead to http://homebrewfleamarket.com and post a free ad there.
The HBD is a copyrighted document. The compilation is copyright
HBD.ORG. Individual postings are copyright by their authors. ASK
before reproducing and you'll rarely have trouble. Digest content
cannot be reproduced by any means for sale or profit.
More information is available by sending the word "info" to
req@hbd.org or read the HBD FAQ at http://hbd.org.
JANITORs on duty: Pat Babcock (pbabcock at hbd dot org), Jason Henning,
Spencer Thomas, and Bill Pierce
----------------------------------------------------------------------
Date: Wed, 20 Nov 2013 21:48:05 -0500
From: Matthew Brooks <mabrooks12 at icloud.com>
Subject: pH meters
Certainly anyone can read up and pontificate like experts about pH meters,
buffers and such as some on this site certainly do. Drift is not just common
on the cheap ones but also on the expensive ones ! It really is a matter of
proper storage, cleaning and usage. If you think you can use a pH meter
successfully at any temperature beyond room temp or somewhere close you are
in for a let down. There are so many factors that come into play with pH
probes that I don't recommend using them at all in brewing unless you can
control the conditions and know how to overcome the many issues that come
into play. Unlike other professed experts on this site, I use pH meters
daily for over 25 years, and I have used the most expensive units and the
cheap ones with success! I stand with Mr. Houseman in that for general
brewing related pH measurement it is likely best to go with strips and make
sure the temp is stabilized at or near room temp!
Sent from my iPad
------------------------------
End of HOMEBREW Digest #6063, 11/21/13
*************************************
-------
FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: pbabcock at hbd.org
***************************************************************
TODAY'S HOME BREW DIGEST BROUGHT TO YOU BY:
No "sponsor-level" donation yet this year
Support those who support you! Visit our sponsor's site!
********** Also visit http://hbd.org/hbdsponsors.html *********
DONATE to the Home Brew Digest. Home Brew Digest, Inc. is a
501(c)3 not-for-profit organization under IRS rules (see the
FAQ at http://hbd.org for details of this status). Donations
can be made by check to Home Brew Digest mailed to (NOTE NEW
ADDRESS):
HBD Server Fund
PO Box 871054
Canton, MI 48187-6054
or by paypal to address serverfund@hbd.org. DONATIONS of $250
or more will be provided with receipts. SPONSORSHIPS of any
amount are considered paid advertisement, and may be deductible
under IRS rules as a business expense. Please consult with your
tax professional, then see http://hbd.org for available
sponsorship opportunities.
***************************************************************
Contents:
pH meters (Matthew Brooks)
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Beer is our obsession and we're late for therapy! *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Home Brew Digest, Inc. is a 501(c)3 Public Charity
[170(b)(1)(A)(vi)] All donations & gifts to the HBD are
tax deductible under section 170 of the Internal Revenue
Code; as are bequests, devises, transfer, or gifts under
section 2055, 2106, or 2522 of the Code.
Financial Projection as of 31 May 2013
*** Condition: Cautiously Optimistic ***
501(c)3 status reistated.
Projected 2012 Budget $3,145.01
Expended against projection $1,586.99
Unplanned expenditures ($ 152.00)
Projected Excess/(Shortfall) ($ 89.84)
As always, donors and donations are publicly acknowledged
and accounted for on the HBD web page. Thank you.
Send articles for __publication_only__ to post@hbd.org
If your e-mail account is being deleted, please unsubscribe first!!
To SUBSCRIBE or UNSUBSCRIBE send an e-mail message with the word
"subscribe" or "unsubscribe" to request@hbd.org FROM THE E-MAIL
ACCOUNT YOU WISH TO HAVE SUBSCRIBED OR UNSUBSCRIBED!!!**
IF YOU HAVE SPAM-PROOFED your e-mail address, you cannot subscribe to
the digest as we cannot reach you. We will not correct your address
for the automation - that's your job.
HAVING TROUBLE posting, subscribing or unsusubscribing? See the HBD FAQ at
http://hbd.org.
LOOKING TO BUY OR SELL USED EQUIPMENT? Please do not post about it here. Go
instead to http://homebrewfleamarket.com and post a free ad there.
The HBD is a copyrighted document. The compilation is copyright
HBD.ORG. Individual postings are copyright by their authors. ASK
before reproducing and you'll rarely have trouble. Digest content
cannot be reproduced by any means for sale or profit.
More information is available by sending the word "info" to
req@hbd.org or read the HBD FAQ at http://hbd.org.
JANITORs on duty: Pat Babcock (pbabcock at hbd dot org), Jason Henning,
Spencer Thomas, and Bill Pierce
----------------------------------------------------------------------
Date: Wed, 20 Nov 2013 21:48:05 -0500
From: Matthew Brooks <mabrooks12 at icloud.com>
Subject: pH meters
Certainly anyone can read up and pontificate like experts about pH meters,
buffers and such as some on this site certainly do. Drift is not just common
on the cheap ones but also on the expensive ones ! It really is a matter of
proper storage, cleaning and usage. If you think you can use a pH meter
successfully at any temperature beyond room temp or somewhere close you are
in for a let down. There are so many factors that come into play with pH
probes that I don't recommend using them at all in brewing unless you can
control the conditions and know how to overcome the many issues that come
into play. Unlike other professed experts on this site, I use pH meters
daily for over 25 years, and I have used the most expensive units and the
cheap ones with success! I stand with Mr. Houseman in that for general
brewing related pH measurement it is likely best to go with strips and make
sure the temp is stabilized at or near room temp!
Sent from my iPad
------------------------------
End of HOMEBREW Digest #6063, 11/21/13
*************************************
-------
Wednesday, November 20, 2013
Homebrew Digest #6062 (November 20, 2013)
HOMEBREW Digest #6062 Wed 20 November 2013
FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: pbabcock at hbd.org
***************************************************************
TODAY'S HOME BREW DIGEST BROUGHT TO YOU BY:
No "sponsor-level" donation yet this year
Support those who support you! Visit our sponsor's site!
********** Also visit http://hbd.org/hbdsponsors.html *********
DONATE to the Home Brew Digest. Home Brew Digest, Inc. is a
501(c)3 not-for-profit organization under IRS rules (see the
FAQ at http://hbd.org for details of this status). Donations
can be made by check to Home Brew Digest mailed to (NOTE NEW
ADDRESS):
HBD Server Fund
PO Box 871054
Canton, MI 48187-6054
or by paypal to address serverfund@hbd.org. DONATIONS of $250
or more will be provided with receipts. SPONSORSHIPS of any
amount are considered paid advertisement, and may be deductible
under IRS rules as a business expense. Please consult with your
tax professional, then see http://hbd.org for available
sponsorship opportunities.
***************************************************************
Contents:
Re: pH Meters ("David Houseman")
pH Meters ("A. J. deLange")
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Beer is our obsession and we're late for therapy! *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Home Brew Digest, Inc. is a 501(c)3 Public Charity
[170(b)(1)(A)(vi)] All donations & gifts to the HBD are
tax deductible under section 170 of the Internal Revenue
Code; as are bequests, devises, transfer, or gifts under
section 2055, 2106, or 2522 of the Code.
Financial Projection as of 31 May 2013
*** Condition: Cautiously Optimistic ***
501(c)3 status reistated.
Projected 2012 Budget $3,145.01
Expended against projection $1,586.99
Unplanned expenditures ($ 152.00)
Projected Excess/(Shortfall) ($ 89.84)
As always, donors and donations are publicly acknowledged
and accounted for on the HBD web page. Thank you.
Send articles for __publication_only__ to post@hbd.org
If your e-mail account is being deleted, please unsubscribe first!!
To SUBSCRIBE or UNSUBSCRIBE send an e-mail message with the word
"subscribe" or "unsubscribe" to request@hbd.org FROM THE E-MAIL
ACCOUNT YOU WISH TO HAVE SUBSCRIBED OR UNSUBSCRIBED!!!**
IF YOU HAVE SPAM-PROOFED your e-mail address, you cannot subscribe to
the digest as we cannot reach you. We will not correct your address
for the automation - that's your job.
HAVING TROUBLE posting, subscribing or unsusubscribing? See the HBD FAQ at
http://hbd.org.
LOOKING TO BUY OR SELL USED EQUIPMENT? Please do not post about it here. Go
instead to http://homebrewfleamarket.com and post a free ad there.
The HBD is a copyrighted document. The compilation is copyright
HBD.ORG. Individual postings are copyright by their authors. ASK
before reproducing and you'll rarely have trouble. Digest content
cannot be reproduced by any means for sale or profit.
More information is available by sending the word "info" to
req@hbd.org or read the HBD FAQ at http://hbd.org.
JANITORs on duty: Pat Babcock (pbabcock at hbd dot org), Jason Henning,
Spencer Thomas, and Bill Pierce
----------------------------------------------------------------------
Date: Tue, 19 Nov 2013 22:02:38 -0500
From: "David Houseman" <david.houseman at verizon.net>
Subject: Re: pH Meters
Pete observes astutely:
"I guess the pH meter makers are like printer companies. Don't
make much on the unit but make up for that on the extras. $19.00 for the
storage solution."
Not sure if AJ would agree, but IMHO good pH strips (ColorpHast for example)
are perfectly adequate for the brewing that we do (well most of us) and at
about $35/100 strips, or $.35 each, are pretty cost effective. No storage
solution. No calibrating solutions. No replacing the probes. In fact
you can make great beer without any pH measurements; brewers did it for
centuries.
But pH meters are cool gadgets.....
Dave Houseman
------------------------------
Date: Wed, 20 Nov 2013 00:59:28 -0500
From: "A. J. deLange" <ajdel at verizon.net>
Subject: pH Meters
A saturated or near saturated solution of potassium chloride is the
usual storage solution but one sometimes sees the recommendation that
the electrode be stored in buffer. The buffers have plenty of ionic
strength with respect to the bulb itself but low concentration of KCl in
the storage solution sets up chemical potential gradients across the
junction so that water tends to migrate in and potassium chloride out.
This can exhaust/dilute the electrolyte in the reference half cell.
You could probably save money by making up storage solution yourself but
the one's you buy may contain mold inhibitors (as the buffers often do)
and/or buffer.
For brewing applications the enzymatic cleaner Zymit is very good. A
little goes a long way (i.e. a liter should last a good long time) and
is great for cleaning anything else in your brewery that gets gummed up
by beer/wort. The more usual cleaning regimens involve going back and
forth between stong acid and base solutions and some recommend
hydrofluoric acid which actually etches away the surface of the bulb to
some extent (and is also very nasty stuff).
Can't remember whether I touched on this in the last post or not but
erratic readings in distilled water are to be expected and, with
inexpensive meters, drift is commonplace.
A.J.
------------------------------
End of HOMEBREW Digest #6062, 11/20/13
*************************************
-------
FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: pbabcock at hbd.org
***************************************************************
TODAY'S HOME BREW DIGEST BROUGHT TO YOU BY:
No "sponsor-level" donation yet this year
Support those who support you! Visit our sponsor's site!
********** Also visit http://hbd.org/hbdsponsors.html *********
DONATE to the Home Brew Digest. Home Brew Digest, Inc. is a
501(c)3 not-for-profit organization under IRS rules (see the
FAQ at http://hbd.org for details of this status). Donations
can be made by check to Home Brew Digest mailed to (NOTE NEW
ADDRESS):
HBD Server Fund
PO Box 871054
Canton, MI 48187-6054
or by paypal to address serverfund@hbd.org. DONATIONS of $250
or more will be provided with receipts. SPONSORSHIPS of any
amount are considered paid advertisement, and may be deductible
under IRS rules as a business expense. Please consult with your
tax professional, then see http://hbd.org for available
sponsorship opportunities.
***************************************************************
Contents:
Re: pH Meters ("David Houseman")
pH Meters ("A. J. deLange")
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Beer is our obsession and we're late for therapy! *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Home Brew Digest, Inc. is a 501(c)3 Public Charity
[170(b)(1)(A)(vi)] All donations & gifts to the HBD are
tax deductible under section 170 of the Internal Revenue
Code; as are bequests, devises, transfer, or gifts under
section 2055, 2106, or 2522 of the Code.
Financial Projection as of 31 May 2013
*** Condition: Cautiously Optimistic ***
501(c)3 status reistated.
Projected 2012 Budget $3,145.01
Expended against projection $1,586.99
Unplanned expenditures ($ 152.00)
Projected Excess/(Shortfall) ($ 89.84)
As always, donors and donations are publicly acknowledged
and accounted for on the HBD web page. Thank you.
Send articles for __publication_only__ to post@hbd.org
If your e-mail account is being deleted, please unsubscribe first!!
To SUBSCRIBE or UNSUBSCRIBE send an e-mail message with the word
"subscribe" or "unsubscribe" to request@hbd.org FROM THE E-MAIL
ACCOUNT YOU WISH TO HAVE SUBSCRIBED OR UNSUBSCRIBED!!!**
IF YOU HAVE SPAM-PROOFED your e-mail address, you cannot subscribe to
the digest as we cannot reach you. We will not correct your address
for the automation - that's your job.
HAVING TROUBLE posting, subscribing or unsusubscribing? See the HBD FAQ at
http://hbd.org.
LOOKING TO BUY OR SELL USED EQUIPMENT? Please do not post about it here. Go
instead to http://homebrewfleamarket.com and post a free ad there.
The HBD is a copyrighted document. The compilation is copyright
HBD.ORG. Individual postings are copyright by their authors. ASK
before reproducing and you'll rarely have trouble. Digest content
cannot be reproduced by any means for sale or profit.
More information is available by sending the word "info" to
req@hbd.org or read the HBD FAQ at http://hbd.org.
JANITORs on duty: Pat Babcock (pbabcock at hbd dot org), Jason Henning,
Spencer Thomas, and Bill Pierce
----------------------------------------------------------------------
Date: Tue, 19 Nov 2013 22:02:38 -0500
From: "David Houseman" <david.houseman at verizon.net>
Subject: Re: pH Meters
Pete observes astutely:
"I guess the pH meter makers are like printer companies. Don't
make much on the unit but make up for that on the extras. $19.00 for the
storage solution."
Not sure if AJ would agree, but IMHO good pH strips (ColorpHast for example)
are perfectly adequate for the brewing that we do (well most of us) and at
about $35/100 strips, or $.35 each, are pretty cost effective. No storage
solution. No calibrating solutions. No replacing the probes. In fact
you can make great beer without any pH measurements; brewers did it for
centuries.
But pH meters are cool gadgets.....
Dave Houseman
------------------------------
Date: Wed, 20 Nov 2013 00:59:28 -0500
From: "A. J. deLange" <ajdel at verizon.net>
Subject: pH Meters
A saturated or near saturated solution of potassium chloride is the
usual storage solution but one sometimes sees the recommendation that
the electrode be stored in buffer. The buffers have plenty of ionic
strength with respect to the bulb itself but low concentration of KCl in
the storage solution sets up chemical potential gradients across the
junction so that water tends to migrate in and potassium chloride out.
This can exhaust/dilute the electrolyte in the reference half cell.
You could probably save money by making up storage solution yourself but
the one's you buy may contain mold inhibitors (as the buffers often do)
and/or buffer.
For brewing applications the enzymatic cleaner Zymit is very good. A
little goes a long way (i.e. a liter should last a good long time) and
is great for cleaning anything else in your brewery that gets gummed up
by beer/wort. The more usual cleaning regimens involve going back and
forth between stong acid and base solutions and some recommend
hydrofluoric acid which actually etches away the surface of the bulb to
some extent (and is also very nasty stuff).
Can't remember whether I touched on this in the last post or not but
erratic readings in distilled water are to be expected and, with
inexpensive meters, drift is commonplace.
A.J.
------------------------------
End of HOMEBREW Digest #6062, 11/20/13
*************************************
-------
Tuesday, November 19, 2013
Homebrew Digest #6061 (November 19, 2013)
HOMEBREW Digest #6061 Tue 19 November 2013
FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: pbabcock at hbd.org
***************************************************************
TODAY'S HOME BREW DIGEST BROUGHT TO YOU BY:
No "sponsor-level" donation yet this year
Support those who support you! Visit our sponsor's site!
********** Also visit http://hbd.org/hbdsponsors.html *********
DONATE to the Home Brew Digest. Home Brew Digest, Inc. is a
501(c)3 not-for-profit organization under IRS rules (see the
FAQ at http://hbd.org for details of this status). Donations
can be made by check to Home Brew Digest mailed to (NOTE NEW
ADDRESS):
HBD Server Fund
PO Box 871054
Canton, MI 48187-6054
or by paypal to address serverfund@hbd.org. DONATIONS of $250
or more will be provided with receipts. SPONSORSHIPS of any
amount are considered paid advertisement, and may be deductible
under IRS rules as a business expense. Please consult with your
tax professional, then see http://hbd.org for available
sponsorship opportunities.
***************************************************************
Contents:
Re: pH Meters (Pete Calinski)
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Beer is our obsession and we're late for therapy! *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Home Brew Digest, Inc. is a 501(c)3 Public Charity
[170(b)(1)(A)(vi)] All donations & gifts to the HBD are
tax deductible under section 170 of the Internal Revenue
Code; as are bequests, devises, transfer, or gifts under
section 2055, 2106, or 2522 of the Code.
Financial Projection as of 31 May 2013
*** Condition: Cautiously Optimistic ***
501(c)3 status reistated.
Projected 2012 Budget $3,145.01
Expended against projection $1,586.99
Unplanned expenditures ($ 152.00)
Projected Excess/(Shortfall) ($ 89.84)
As always, donors and donations are publicly acknowledged
and accounted for on the HBD web page. Thank you.
Send articles for __publication_only__ to post@hbd.org
If your e-mail account is being deleted, please unsubscribe first!!
To SUBSCRIBE or UNSUBSCRIBE send an e-mail message with the word
"subscribe" or "unsubscribe" to request@hbd.org FROM THE E-MAIL
ACCOUNT YOU WISH TO HAVE SUBSCRIBED OR UNSUBSCRIBED!!!**
IF YOU HAVE SPAM-PROOFED your e-mail address, you cannot subscribe to
the digest as we cannot reach you. We will not correct your address
for the automation - that's your job.
HAVING TROUBLE posting, subscribing or unsusubscribing? See the HBD FAQ at
http://hbd.org.
LOOKING TO BUY OR SELL USED EQUIPMENT? Please do not post about it here. Go
instead to http://homebrewfleamarket.com and post a free ad there.
The HBD is a copyrighted document. The compilation is copyright
HBD.ORG. Individual postings are copyright by their authors. ASK
before reproducing and you'll rarely have trouble. Digest content
cannot be reproduced by any means for sale or profit.
More information is available by sending the word "info" to
req@hbd.org or read the HBD FAQ at http://hbd.org.
JANITORs on duty: Pat Babcock (pbabcock at hbd dot org), Jason Henning,
Spencer Thomas, and Bill Pierce
----------------------------------------------------------------------
Date: Mon, 18 Nov 2013 22:47:48 -0500
From: Pete Calinski <pete.calinski at gmail.com>
Subject: Re: pH Meters
AJ,
I was hoping you were lurking around when I posted these questions. Thanks
and thanks to Martin.
You guys have sent me on a path to really understand my pH meter.
Some observations. It drifts measuring distilled water and tap water but
not the 7.01 and 4.01 solution.
I was mistaken when I said the instructions said to store it in 7.01
solution. They said a special solution which was not packaged with the unit
even though they packed two 7.01 and two 4.01 packs and two packs of
cleaning solution. I picked up a bottle of storage solution at my homebrew
place today. I guess the pH meter makers are like printer companies. Don't
make much on the unit but make up for that on the extras. $19.00 for the
storage solution.
So now I will concentrate on calibrating and checking calibration then drift
in various situations, etc.
I also found (and lost for now) a site with a lot of information about how
to clean and "recondition" a probe. It says that sometimes corrects the
drift problem.
If anything come out of these experiments I'll post here.
Thanks again AJ and Martin,
Pete
------------------------------
End of HOMEBREW Digest #6061, 11/19/13
*************************************
-------
FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: pbabcock at hbd.org
***************************************************************
TODAY'S HOME BREW DIGEST BROUGHT TO YOU BY:
No "sponsor-level" donation yet this year
Support those who support you! Visit our sponsor's site!
********** Also visit http://hbd.org/hbdsponsors.html *********
DONATE to the Home Brew Digest. Home Brew Digest, Inc. is a
501(c)3 not-for-profit organization under IRS rules (see the
FAQ at http://hbd.org for details of this status). Donations
can be made by check to Home Brew Digest mailed to (NOTE NEW
ADDRESS):
HBD Server Fund
PO Box 871054
Canton, MI 48187-6054
or by paypal to address serverfund@hbd.org. DONATIONS of $250
or more will be provided with receipts. SPONSORSHIPS of any
amount are considered paid advertisement, and may be deductible
under IRS rules as a business expense. Please consult with your
tax professional, then see http://hbd.org for available
sponsorship opportunities.
***************************************************************
Contents:
Re: pH Meters (Pete Calinski)
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Beer is our obsession and we're late for therapy! *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Home Brew Digest, Inc. is a 501(c)3 Public Charity
[170(b)(1)(A)(vi)] All donations & gifts to the HBD are
tax deductible under section 170 of the Internal Revenue
Code; as are bequests, devises, transfer, or gifts under
section 2055, 2106, or 2522 of the Code.
Financial Projection as of 31 May 2013
*** Condition: Cautiously Optimistic ***
501(c)3 status reistated.
Projected 2012 Budget $3,145.01
Expended against projection $1,586.99
Unplanned expenditures ($ 152.00)
Projected Excess/(Shortfall) ($ 89.84)
As always, donors and donations are publicly acknowledged
and accounted for on the HBD web page. Thank you.
Send articles for __publication_only__ to post@hbd.org
If your e-mail account is being deleted, please unsubscribe first!!
To SUBSCRIBE or UNSUBSCRIBE send an e-mail message with the word
"subscribe" or "unsubscribe" to request@hbd.org FROM THE E-MAIL
ACCOUNT YOU WISH TO HAVE SUBSCRIBED OR UNSUBSCRIBED!!!**
IF YOU HAVE SPAM-PROOFED your e-mail address, you cannot subscribe to
the digest as we cannot reach you. We will not correct your address
for the automation - that's your job.
HAVING TROUBLE posting, subscribing or unsusubscribing? See the HBD FAQ at
http://hbd.org.
LOOKING TO BUY OR SELL USED EQUIPMENT? Please do not post about it here. Go
instead to http://homebrewfleamarket.com and post a free ad there.
The HBD is a copyrighted document. The compilation is copyright
HBD.ORG. Individual postings are copyright by their authors. ASK
before reproducing and you'll rarely have trouble. Digest content
cannot be reproduced by any means for sale or profit.
More information is available by sending the word "info" to
req@hbd.org or read the HBD FAQ at http://hbd.org.
JANITORs on duty: Pat Babcock (pbabcock at hbd dot org), Jason Henning,
Spencer Thomas, and Bill Pierce
----------------------------------------------------------------------
Date: Mon, 18 Nov 2013 22:47:48 -0500
From: Pete Calinski <pete.calinski at gmail.com>
Subject: Re: pH Meters
AJ,
I was hoping you were lurking around when I posted these questions. Thanks
and thanks to Martin.
You guys have sent me on a path to really understand my pH meter.
Some observations. It drifts measuring distilled water and tap water but
not the 7.01 and 4.01 solution.
I was mistaken when I said the instructions said to store it in 7.01
solution. They said a special solution which was not packaged with the unit
even though they packed two 7.01 and two 4.01 packs and two packs of
cleaning solution. I picked up a bottle of storage solution at my homebrew
place today. I guess the pH meter makers are like printer companies. Don't
make much on the unit but make up for that on the extras. $19.00 for the
storage solution.
So now I will concentrate on calibrating and checking calibration then drift
in various situations, etc.
I also found (and lost for now) a site with a lot of information about how
to clean and "recondition" a probe. It says that sometimes corrects the
drift problem.
If anything come out of these experiments I'll post here.
Thanks again AJ and Martin,
Pete
------------------------------
End of HOMEBREW Digest #6061, 11/19/13
*************************************
-------
Saturday, November 16, 2013
Homebrew Digest #6060 (November 16, 2013)
HOMEBREW Digest #6060 Sat 16 November 2013
FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: pbabcock at hbd.org
***************************************************************
TODAY'S HOME BREW DIGEST BROUGHT TO YOU BY:
No "sponsor-level" donation yet this year
Support those who support you! Visit our sponsor's site!
********** Also visit http://hbd.org/hbdsponsors.html *********
DONATE to the Home Brew Digest. Home Brew Digest, Inc. is a
501(c)3 not-for-profit organization under IRS rules (see the
FAQ at http://hbd.org for details of this status). Donations
can be made by check to Home Brew Digest mailed to (NOTE NEW
ADDRESS):
HBD Server Fund
PO Box 871054
Canton, MI 48187-6054
or by paypal to address serverfund@hbd.org. DONATIONS of $250
or more will be provided with receipts. SPONSORSHIPS of any
amount are considered paid advertisement, and may be deductible
under IRS rules as a business expense. Please consult with your
tax professional, then see http://hbd.org for available
sponsorship opportunities.
***************************************************************
Contents:
pH Meters ("A. J. deLange")
Re: Questions About pH Meters (mossview5)
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Beer is our obsession and we're late for therapy! *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Home Brew Digest, Inc. is a 501(c)3 Public Charity
[170(b)(1)(A)(vi)] All donations & gifts to the HBD are
tax deductible under section 170 of the Internal Revenue
Code; as are bequests, devises, transfer, or gifts under
section 2055, 2106, or 2522 of the Code.
Financial Projection as of 31 May 2013
*** Condition: Cautiously Optimistic ***
501(c)3 status reistated.
Projected 2012 Budget $3,145.01
Expended against projection $1,586.99
Unplanned expenditures ($ 152.00)
Projected Excess/(Shortfall) ($ 89.84)
As always, donors and donations are publicly acknowledged
and accounted for on the HBD web page. Thank you.
Send articles for __publication_only__ to post@hbd.org
If your e-mail account is being deleted, please unsubscribe first!!
To SUBSCRIBE or UNSUBSCRIBE send an e-mail message with the word
"subscribe" or "unsubscribe" to request@hbd.org FROM THE E-MAIL
ACCOUNT YOU WISH TO HAVE SUBSCRIBED OR UNSUBSCRIBED!!!**
IF YOU HAVE SPAM-PROOFED your e-mail address, you cannot subscribe to
the digest as we cannot reach you. We will not correct your address
for the automation - that's your job.
HAVING TROUBLE posting, subscribing or unsusubscribing? See the HBD FAQ at
http://hbd.org.
LOOKING TO BUY OR SELL USED EQUIPMENT? Please do not post about it here. Go
instead to http://homebrewfleamarket.com and post a free ad there.
The HBD is a copyrighted document. The compilation is copyright
HBD.ORG. Individual postings are copyright by their authors. ASK
before reproducing and you'll rarely have trouble. Digest content
cannot be reproduced by any means for sale or profit.
More information is available by sending the word "info" to
req@hbd.org or read the HBD FAQ at http://hbd.org.
JANITORs on duty: Pat Babcock (pbabcock at hbd dot org), Jason Henning,
Spencer Thomas, and Bill Pierce
----------------------------------------------------------------------
Date: Sat, 16 Nov 2013 09:17:43 -0500
From: "A. J. deLange" <ajdel at cox.net>
Subject: pH Meters
I would regard a inexpensive pH meter that has never been used and is 2
years old with some suspicion. For general tips on the use of pH meters
in brewing see
http://www.homebrewtalk.com/f128/ph-meter-calibration-302256/.
(1). Inexpensive meters are infamous for lack of stability. The
reference above give instructions for checking the stability of your
meter (basically measuring the buffers used for calibration over time).
A pH meters relies on the flow of electrical current - a very feeble
flow perhaps but it is necessary that current flow. Distilled water has
a very high resistivity which impedes that current flow, allows local
accumulation of charge... For this reason DI water is very hard to
measure as is any solution of low ionic strength which may include your
tap water. In such cases one uses special buffers and adds ion strength
adjusters to the sample which is also protected from atmospheric CO2
(which would cause pH to fall over time). One or more of these effects
may be responsible for what you are seeing. My money is on electrode
instability. Yes, unfortunately, it is all too common in inexpensive meters.
(2) Yes, as noted above, such drift is all too common. What is really
telling is to do this with one of the calibration buffers. Cover with
Parafilm or aluminum foil to prevent evaporation.
(3) It is possible that lactobacillus or yeast started to grow in that
time period (this lowering pH) but more probable that your electrode
drifted.
(4) Yes, but why not just do what the manufacturer recommends?
(5) Buffers have, as do most chemicals, finite shelf lives but the main
concerns with reuse of buffers is contamination with sample, the other
buffer, rinse water (water is a contaminant because it dilutes the buffer).
Other advice: be sure to read at the link above.
Cheers, A.J.
------------------------------
Date: Sat, 16 Nov 2013 17:19:53 -0500
From: mossview5 <mossview5 at gmail.com>
Subject: Re: Questions About pH Meters
I am surprised that they recommend storing the probe in 7 buffer solution.
It probably doesn't have a high enough ionic content to keep the bulb
saturated. The typical probe storage solution employs something on the
order of 1N potassium chloride in the solution. That isn't that saturated
a solution, but its got to be better than pH 7 buffer.
The climb in pH could be a function of several phenomena. Dissolution of
CO2 from the tap water is a possibility, but the fact that the distilled
water displays similar response suggests that this is not the mechanism.
Since you are essentially soaking the probe in a non-saturated solution,
it could be depleting the probe of its ionic balance. I'd say not to soak
it like that. A pH reading is obtained in a few minutes, not hours.
I literally just wrote about a similar subject on the Bru'n Water Facebook
page. You may want to take a peek at that.
https://www.facebook.com/pages/Brun-Water/464551136933908?ref=hl
Martin
------------------------------
End of HOMEBREW Digest #6060, 11/16/13
*************************************
-------
FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: pbabcock at hbd.org
***************************************************************
TODAY'S HOME BREW DIGEST BROUGHT TO YOU BY:
No "sponsor-level" donation yet this year
Support those who support you! Visit our sponsor's site!
********** Also visit http://hbd.org/hbdsponsors.html *********
DONATE to the Home Brew Digest. Home Brew Digest, Inc. is a
501(c)3 not-for-profit organization under IRS rules (see the
FAQ at http://hbd.org for details of this status). Donations
can be made by check to Home Brew Digest mailed to (NOTE NEW
ADDRESS):
HBD Server Fund
PO Box 871054
Canton, MI 48187-6054
or by paypal to address serverfund@hbd.org. DONATIONS of $250
or more will be provided with receipts. SPONSORSHIPS of any
amount are considered paid advertisement, and may be deductible
under IRS rules as a business expense. Please consult with your
tax professional, then see http://hbd.org for available
sponsorship opportunities.
***************************************************************
Contents:
pH Meters ("A. J. deLange")
Re: Questions About pH Meters (mossview5)
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Beer is our obsession and we're late for therapy! *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Home Brew Digest, Inc. is a 501(c)3 Public Charity
[170(b)(1)(A)(vi)] All donations & gifts to the HBD are
tax deductible under section 170 of the Internal Revenue
Code; as are bequests, devises, transfer, or gifts under
section 2055, 2106, or 2522 of the Code.
Financial Projection as of 31 May 2013
*** Condition: Cautiously Optimistic ***
501(c)3 status reistated.
Projected 2012 Budget $3,145.01
Expended against projection $1,586.99
Unplanned expenditures ($ 152.00)
Projected Excess/(Shortfall) ($ 89.84)
As always, donors and donations are publicly acknowledged
and accounted for on the HBD web page. Thank you.
Send articles for __publication_only__ to post@hbd.org
If your e-mail account is being deleted, please unsubscribe first!!
To SUBSCRIBE or UNSUBSCRIBE send an e-mail message with the word
"subscribe" or "unsubscribe" to request@hbd.org FROM THE E-MAIL
ACCOUNT YOU WISH TO HAVE SUBSCRIBED OR UNSUBSCRIBED!!!**
IF YOU HAVE SPAM-PROOFED your e-mail address, you cannot subscribe to
the digest as we cannot reach you. We will not correct your address
for the automation - that's your job.
HAVING TROUBLE posting, subscribing or unsusubscribing? See the HBD FAQ at
http://hbd.org.
LOOKING TO BUY OR SELL USED EQUIPMENT? Please do not post about it here. Go
instead to http://homebrewfleamarket.com and post a free ad there.
The HBD is a copyrighted document. The compilation is copyright
HBD.ORG. Individual postings are copyright by their authors. ASK
before reproducing and you'll rarely have trouble. Digest content
cannot be reproduced by any means for sale or profit.
More information is available by sending the word "info" to
req@hbd.org or read the HBD FAQ at http://hbd.org.
JANITORs on duty: Pat Babcock (pbabcock at hbd dot org), Jason Henning,
Spencer Thomas, and Bill Pierce
----------------------------------------------------------------------
Date: Sat, 16 Nov 2013 09:17:43 -0500
From: "A. J. deLange" <ajdel at cox.net>
Subject: pH Meters
I would regard a inexpensive pH meter that has never been used and is 2
years old with some suspicion. For general tips on the use of pH meters
in brewing see
http://www.homebrewtalk.com/f128/ph-meter-calibration-302256/.
(1). Inexpensive meters are infamous for lack of stability. The
reference above give instructions for checking the stability of your
meter (basically measuring the buffers used for calibration over time).
A pH meters relies on the flow of electrical current - a very feeble
flow perhaps but it is necessary that current flow. Distilled water has
a very high resistivity which impedes that current flow, allows local
accumulation of charge... For this reason DI water is very hard to
measure as is any solution of low ionic strength which may include your
tap water. In such cases one uses special buffers and adds ion strength
adjusters to the sample which is also protected from atmospheric CO2
(which would cause pH to fall over time). One or more of these effects
may be responsible for what you are seeing. My money is on electrode
instability. Yes, unfortunately, it is all too common in inexpensive meters.
(2) Yes, as noted above, such drift is all too common. What is really
telling is to do this with one of the calibration buffers. Cover with
Parafilm or aluminum foil to prevent evaporation.
(3) It is possible that lactobacillus or yeast started to grow in that
time period (this lowering pH) but more probable that your electrode
drifted.
(4) Yes, but why not just do what the manufacturer recommends?
(5) Buffers have, as do most chemicals, finite shelf lives but the main
concerns with reuse of buffers is contamination with sample, the other
buffer, rinse water (water is a contaminant because it dilutes the buffer).
Other advice: be sure to read at the link above.
Cheers, A.J.
------------------------------
Date: Sat, 16 Nov 2013 17:19:53 -0500
From: mossview5 <mossview5 at gmail.com>
Subject: Re: Questions About pH Meters
I am surprised that they recommend storing the probe in 7 buffer solution.
It probably doesn't have a high enough ionic content to keep the bulb
saturated. The typical probe storage solution employs something on the
order of 1N potassium chloride in the solution. That isn't that saturated
a solution, but its got to be better than pH 7 buffer.
The climb in pH could be a function of several phenomena. Dissolution of
CO2 from the tap water is a possibility, but the fact that the distilled
water displays similar response suggests that this is not the mechanism.
Since you are essentially soaking the probe in a non-saturated solution,
it could be depleting the probe of its ionic balance. I'd say not to soak
it like that. A pH reading is obtained in a few minutes, not hours.
I literally just wrote about a similar subject on the Bru'n Water Facebook
page. You may want to take a peek at that.
https://www.facebook.com/pages/Brun-Water/464551136933908?ref=hl
Martin
------------------------------
End of HOMEBREW Digest #6060, 11/16/13
*************************************
-------
Friday, November 15, 2013
Homebrew Digest #6059 (November 15, 2013)
HOMEBREW Digest #6059 Fri 15 November 2013
FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: pbabcock at hbd.org
***************************************************************
TODAY'S HOME BREW DIGEST BROUGHT TO YOU BY:
No "sponsor-level" donation yet this year
Support those who support you! Visit our sponsor's site!
********** Also visit http://hbd.org/hbdsponsors.html *********
DONATE to the Home Brew Digest. Home Brew Digest, Inc. is a
501(c)3 not-for-profit organization under IRS rules (see the
FAQ at http://hbd.org for details of this status). Donations
can be made by check to Home Brew Digest mailed to (NOTE NEW
ADDRESS):
HBD Server Fund
PO Box 871054
Canton, MI 48187-6054
or by paypal to address serverfund@hbd.org. DONATIONS of $250
or more will be provided with receipts. SPONSORSHIPS of any
amount are considered paid advertisement, and may be deductible
under IRS rules as a business expense. Please consult with your
tax professional, then see http://hbd.org for available
sponsorship opportunities.
***************************************************************
Contents:
Questions About pH Meters (Pete Calinski)
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Beer is our obsession and we're late for therapy! *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Home Brew Digest, Inc. is a 501(c)3 Public Charity
[170(b)(1)(A)(vi)] All donations & gifts to the HBD are
tax deductible under section 170 of the Internal Revenue
Code; as are bequests, devises, transfer, or gifts under
section 2055, 2106, or 2522 of the Code.
Financial Projection as of 31 May 2013
*** Condition: Cautiously Optimistic ***
501(c)3 status reistated.
Projected 2012 Budget $3,145.01
Expended against projection $1,586.99
Unplanned expenditures ($ 152.00)
Projected Excess/(Shortfall) ($ 89.84)
As always, donors and donations are publicly acknowledged
and accounted for on the HBD web page. Thank you.
Send articles for __publication_only__ to post@hbd.org
If your e-mail account is being deleted, please unsubscribe first!!
To SUBSCRIBE or UNSUBSCRIBE send an e-mail message with the word
"subscribe" or "unsubscribe" to request@hbd.org FROM THE E-MAIL
ACCOUNT YOU WISH TO HAVE SUBSCRIBED OR UNSUBSCRIBED!!!**
IF YOU HAVE SPAM-PROOFED your e-mail address, you cannot subscribe to
the digest as we cannot reach you. We will not correct your address
for the automation - that's your job.
HAVING TROUBLE posting, subscribing or unsusubscribing? See the HBD FAQ at
http://hbd.org.
LOOKING TO BUY OR SELL USED EQUIPMENT? Please do not post about it here. Go
instead to http://homebrewfleamarket.com and post a free ad there.
The HBD is a copyrighted document. The compilation is copyright
HBD.ORG. Individual postings are copyright by their authors. ASK
before reproducing and you'll rarely have trouble. Digest content
cannot be reproduced by any means for sale or profit.
More information is available by sending the word "info" to
req@hbd.org or read the HBD FAQ at http://hbd.org.
JANITORs on duty: Pat Babcock (pbabcock at hbd dot org), Jason Henning,
Spencer Thomas, and Bill Pierce
----------------------------------------------------------------------
Date: Fri, 15 Nov 2013 14:56:29 -0500
From: Pete Calinski <pete.calinski at gmail.com>
Subject: Questions About pH Meters
I received a pH meter as a gift two years ago. I finally fired it up a few
days ago for an APA I was brewing. All the calibrations worked fine and
have held so far. But I have some questions I hope this enlightened group
can help me with. The meter is a Hanna "Checker".
(1) Although I get stable readings with the 7.01 and 4.01 solutions, with
tap water and distilled water the readings just keep counting up. Fairly
fast at first, through 7.00 and up and up, ever more slowly but they never
stop climbing. Is this typical?
(2) I took a sample of the mash solution and set it aside to come to
temperature. Then about four hours later I measured the pH and got 5.85. I
came back 20 hours later and measured it again and got 4.92. Is it normal
for the pH to change over time?
(3) If so, did the four hour delay cause any error from the actual pH of the
mash?
(4) The instructions say, for storage, fill this little rubber cap with 7.01
solution and place it on the probe tip. Could I use a sample test tube
filled with the 7.01 solution? I would use a tight fitting stopper that was
snug to the sample tube.
(5) The instructions say to use fresh solution each time. Can I just use a
test tube with a tight stopper to store the solutions if I am careful about
evaporation?
Any other advice for a novice?
Thanks,
Pete
------------------------------
End of HOMEBREW Digest #6059, 11/15/13
*************************************
-------
FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: pbabcock at hbd.org
***************************************************************
TODAY'S HOME BREW DIGEST BROUGHT TO YOU BY:
No "sponsor-level" donation yet this year
Support those who support you! Visit our sponsor's site!
********** Also visit http://hbd.org/hbdsponsors.html *********
DONATE to the Home Brew Digest. Home Brew Digest, Inc. is a
501(c)3 not-for-profit organization under IRS rules (see the
FAQ at http://hbd.org for details of this status). Donations
can be made by check to Home Brew Digest mailed to (NOTE NEW
ADDRESS):
HBD Server Fund
PO Box 871054
Canton, MI 48187-6054
or by paypal to address serverfund@hbd.org. DONATIONS of $250
or more will be provided with receipts. SPONSORSHIPS of any
amount are considered paid advertisement, and may be deductible
under IRS rules as a business expense. Please consult with your
tax professional, then see http://hbd.org for available
sponsorship opportunities.
***************************************************************
Contents:
Questions About pH Meters (Pete Calinski)
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Beer is our obsession and we're late for therapy! *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Home Brew Digest, Inc. is a 501(c)3 Public Charity
[170(b)(1)(A)(vi)] All donations & gifts to the HBD are
tax deductible under section 170 of the Internal Revenue
Code; as are bequests, devises, transfer, or gifts under
section 2055, 2106, or 2522 of the Code.
Financial Projection as of 31 May 2013
*** Condition: Cautiously Optimistic ***
501(c)3 status reistated.
Projected 2012 Budget $3,145.01
Expended against projection $1,586.99
Unplanned expenditures ($ 152.00)
Projected Excess/(Shortfall) ($ 89.84)
As always, donors and donations are publicly acknowledged
and accounted for on the HBD web page. Thank you.
Send articles for __publication_only__ to post@hbd.org
If your e-mail account is being deleted, please unsubscribe first!!
To SUBSCRIBE or UNSUBSCRIBE send an e-mail message with the word
"subscribe" or "unsubscribe" to request@hbd.org FROM THE E-MAIL
ACCOUNT YOU WISH TO HAVE SUBSCRIBED OR UNSUBSCRIBED!!!**
IF YOU HAVE SPAM-PROOFED your e-mail address, you cannot subscribe to
the digest as we cannot reach you. We will not correct your address
for the automation - that's your job.
HAVING TROUBLE posting, subscribing or unsusubscribing? See the HBD FAQ at
http://hbd.org.
LOOKING TO BUY OR SELL USED EQUIPMENT? Please do not post about it here. Go
instead to http://homebrewfleamarket.com and post a free ad there.
The HBD is a copyrighted document. The compilation is copyright
HBD.ORG. Individual postings are copyright by their authors. ASK
before reproducing and you'll rarely have trouble. Digest content
cannot be reproduced by any means for sale or profit.
More information is available by sending the word "info" to
req@hbd.org or read the HBD FAQ at http://hbd.org.
JANITORs on duty: Pat Babcock (pbabcock at hbd dot org), Jason Henning,
Spencer Thomas, and Bill Pierce
----------------------------------------------------------------------
Date: Fri, 15 Nov 2013 14:56:29 -0500
From: Pete Calinski <pete.calinski at gmail.com>
Subject: Questions About pH Meters
I received a pH meter as a gift two years ago. I finally fired it up a few
days ago for an APA I was brewing. All the calibrations worked fine and
have held so far. But I have some questions I hope this enlightened group
can help me with. The meter is a Hanna "Checker".
(1) Although I get stable readings with the 7.01 and 4.01 solutions, with
tap water and distilled water the readings just keep counting up. Fairly
fast at first, through 7.00 and up and up, ever more slowly but they never
stop climbing. Is this typical?
(2) I took a sample of the mash solution and set it aside to come to
temperature. Then about four hours later I measured the pH and got 5.85. I
came back 20 hours later and measured it again and got 4.92. Is it normal
for the pH to change over time?
(3) If so, did the four hour delay cause any error from the actual pH of the
mash?
(4) The instructions say, for storage, fill this little rubber cap with 7.01
solution and place it on the probe tip. Could I use a sample test tube
filled with the 7.01 solution? I would use a tight fitting stopper that was
snug to the sample tube.
(5) The instructions say to use fresh solution each time. Can I just use a
test tube with a tight stopper to store the solutions if I am careful about
evaporation?
Any other advice for a novice?
Thanks,
Pete
------------------------------
End of HOMEBREW Digest #6059, 11/15/13
*************************************
-------
Thursday, November 7, 2013
Homebrew Digest #6058 (November 07, 2013)
HOMEBREW Digest #6058 Thu 07 November 2013
FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: pbabcock at hbd.org
***************************************************************
TODAY'S HOME BREW DIGEST BROUGHT TO YOU BY:
No "sponsor-level" donation yet this year
Support those who support you! Visit our sponsor's site!
********** Also visit http://hbd.org/hbdsponsors.html *********
DONATE to the Home Brew Digest. Home Brew Digest, Inc. is a
501(c)3 not-for-profit organization under IRS rules (see the
FAQ at http://hbd.org for details of this status). Donations
can be made by check to Home Brew Digest mailed to (NOTE NEW
ADDRESS):
HBD Server Fund
PO Box 871054
Canton, MI 48187-6054
or by paypal to address serverfund@hbd.org. DONATIONS of $250
or more will be provided with receipts. SPONSORSHIPS of any
amount are considered paid advertisement, and may be deductible
under IRS rules as a business expense. Please consult with your
tax professional, then see http://hbd.org for available
sponsorship opportunities.
***************************************************************
Contents:
Forget Barley And Hops: Craft Brewers Want A Taste Of Place : The Salt : NPR (Pete Calinski)
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Beer is our obsession and we're late for therapy! *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Home Brew Digest, Inc. is a 501(c)3 Public Charity
[170(b)(1)(A)(vi)] All donations & gifts to the HBD are
tax deductible under section 170 of the Internal Revenue
Code; as are bequests, devises, transfer, or gifts under
section 2055, 2106, or 2522 of the Code.
Financial Projection as of 31 May 2013
*** Condition: Cautiously Optimistic ***
501(c)3 status reistated.
Projected 2012 Budget $3,145.01
Expended against projection $1,586.99
Unplanned expenditures ($ 152.00)
Projected Excess/(Shortfall) ($ 89.84)
As always, donors and donations are publicly acknowledged
and accounted for on the HBD web page. Thank you.
Send articles for __publication_only__ to post@hbd.org
If your e-mail account is being deleted, please unsubscribe first!!
To SUBSCRIBE or UNSUBSCRIBE send an e-mail message with the word
"subscribe" or "unsubscribe" to request@hbd.org FROM THE E-MAIL
ACCOUNT YOU WISH TO HAVE SUBSCRIBED OR UNSUBSCRIBED!!!**
IF YOU HAVE SPAM-PROOFED your e-mail address, you cannot subscribe to
the digest as we cannot reach you. We will not correct your address
for the automation - that's your job.
HAVING TROUBLE posting, subscribing or unsusubscribing? See the HBD FAQ at
http://hbd.org.
LOOKING TO BUY OR SELL USED EQUIPMENT? Please do not post about it here. Go
instead to http://homebrewfleamarket.com and post a free ad there.
The HBD is a copyrighted document. The compilation is copyright
HBD.ORG. Individual postings are copyright by their authors. ASK
before reproducing and you'll rarely have trouble. Digest content
cannot be reproduced by any means for sale or profit.
More information is available by sending the word "info" to
req@hbd.org or read the HBD FAQ at http://hbd.org.
JANITORs on duty: Pat Babcock (pbabcock at hbd dot org), Jason Henning,
Spencer Thomas, and Bill Pierce
----------------------------------------------------------------------
Date: Wed, 6 Nov 2013 22:21:10 -0500
From: Pete Calinski <pete.calinski at gmail.com>
Subject: Forget Barley And Hops: Craft Brewers Want A Taste Of Place : The Salt : NPR
http://www.npr.org/blogs/thesalt/2013/11/06/243486057/forget-barley-and-hops
-craft-brewers-want-a-taste-of-place?utm_content=socialflow&utm_campaign=nprf
acebook&utm_source=npr&utm_medium=facebook
------------------------------
End of HOMEBREW Digest #6058, 11/07/13
*************************************
-------
FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: pbabcock at hbd.org
***************************************************************
TODAY'S HOME BREW DIGEST BROUGHT TO YOU BY:
No "sponsor-level" donation yet this year
Support those who support you! Visit our sponsor's site!
********** Also visit http://hbd.org/hbdsponsors.html *********
DONATE to the Home Brew Digest. Home Brew Digest, Inc. is a
501(c)3 not-for-profit organization under IRS rules (see the
FAQ at http://hbd.org for details of this status). Donations
can be made by check to Home Brew Digest mailed to (NOTE NEW
ADDRESS):
HBD Server Fund
PO Box 871054
Canton, MI 48187-6054
or by paypal to address serverfund@hbd.org. DONATIONS of $250
or more will be provided with receipts. SPONSORSHIPS of any
amount are considered paid advertisement, and may be deductible
under IRS rules as a business expense. Please consult with your
tax professional, then see http://hbd.org for available
sponsorship opportunities.
***************************************************************
Contents:
Forget Barley And Hops: Craft Brewers Want A Taste Of Place : The Salt : NPR (Pete Calinski)
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Beer is our obsession and we're late for therapy! *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Home Brew Digest, Inc. is a 501(c)3 Public Charity
[170(b)(1)(A)(vi)] All donations & gifts to the HBD are
tax deductible under section 170 of the Internal Revenue
Code; as are bequests, devises, transfer, or gifts under
section 2055, 2106, or 2522 of the Code.
Financial Projection as of 31 May 2013
*** Condition: Cautiously Optimistic ***
501(c)3 status reistated.
Projected 2012 Budget $3,145.01
Expended against projection $1,586.99
Unplanned expenditures ($ 152.00)
Projected Excess/(Shortfall) ($ 89.84)
As always, donors and donations are publicly acknowledged
and accounted for on the HBD web page. Thank you.
Send articles for __publication_only__ to post@hbd.org
If your e-mail account is being deleted, please unsubscribe first!!
To SUBSCRIBE or UNSUBSCRIBE send an e-mail message with the word
"subscribe" or "unsubscribe" to request@hbd.org FROM THE E-MAIL
ACCOUNT YOU WISH TO HAVE SUBSCRIBED OR UNSUBSCRIBED!!!**
IF YOU HAVE SPAM-PROOFED your e-mail address, you cannot subscribe to
the digest as we cannot reach you. We will not correct your address
for the automation - that's your job.
HAVING TROUBLE posting, subscribing or unsusubscribing? See the HBD FAQ at
http://hbd.org.
LOOKING TO BUY OR SELL USED EQUIPMENT? Please do not post about it here. Go
instead to http://homebrewfleamarket.com and post a free ad there.
The HBD is a copyrighted document. The compilation is copyright
HBD.ORG. Individual postings are copyright by their authors. ASK
before reproducing and you'll rarely have trouble. Digest content
cannot be reproduced by any means for sale or profit.
More information is available by sending the word "info" to
req@hbd.org or read the HBD FAQ at http://hbd.org.
JANITORs on duty: Pat Babcock (pbabcock at hbd dot org), Jason Henning,
Spencer Thomas, and Bill Pierce
----------------------------------------------------------------------
Date: Wed, 6 Nov 2013 22:21:10 -0500
From: Pete Calinski <pete.calinski at gmail.com>
Subject: Forget Barley And Hops: Craft Brewers Want A Taste Of Place : The Salt : NPR
http://www.npr.org/blogs/thesalt/2013/11/06/243486057/forget-barley-and-hops
-craft-brewers-want-a-taste-of-place?utm_content=socialflow&utm_campaign=nprf
acebook&utm_source=npr&utm_medium=facebook
------------------------------
End of HOMEBREW Digest #6058, 11/07/13
*************************************
-------
Subscribe to:
Posts (Atom)