[Histonet] pH strips

Rene J Buesa rjbuesa <@t> yahoo.com
Wed Dec 31 14:11:03 CST 2008

pH strips are made of a "filter paper like" base paper with pH reacting reagents for certain pH ranges and, yes, they react improperly after the date set by the manufacturer.
René J. 

--- On Wed, 12/31/08, Amber McKenzie <amber.mckenzie <@t> gastrodocs.net> wrote:

From: Amber McKenzie <amber.mckenzie <@t> gastrodocs.net>
Subject: [Histonet] pH strips
To: histonet <@t> lists.utsouthwestern.edu
Date: Wednesday, December 31, 2008, 1:43 PM

Do pH strips go bad after a certain time period?

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