RE: NANFA-L-- hardness and pH

Bruce Stallsmith (
Fri, 26 Aug 2005 10:23:12 -0400

Alkalinity, strictly speaking, is a measure of dissolved carbonates and
phosphates (mostly) which don't count toward the various measures of
hardness. But, they would contribute to the conductivity of water, usually
measured as Total Dissolved Solids (TDS) by a standard conversion of the
conductivity measured as micro-siemens. In short, hardness and alkalinity
often co-vary but are different things.

--Bruce Stallsmith
"ask me about alkalinity titrations" near the Tennessee
Huntsville, AL, US of A

>From: Laura Burbage <>
>Subject: NANFA-L-- hardness and pH
>Date: Fri, 26 Aug 2005 07:02:12 -0700 (PDT)
>I've got a chemistry question. The water here in
>Athens is very soft, less than 2 GH and KH. But it is
>persistently alkaline, around pH 8 or more. Why on
>earth is this? What can I do when I am working with
>tap water to raise the hardness without raising the
>pH? How can I lower the pH?
>North Oconee River
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