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	FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
		Digest Janitor: pbabcock at hbd.org


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Contents:
  ph meters (Matthew Brooks)
  Sanitizer pH ("A. J. deLange")


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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

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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.

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