Klarinet Archive - Posting 000176.txt from 1999/12

From: Dave Sandusky <daves@-----.com>
Subj: Re: [kl] almost totally OT
Date: Mon, 6 Dec 1999 11:36:48 -0500

pH of perfectly pure water would be 7.00. But, this is meaningless, since
ultra pure water doesn't contain enough electrolyte content to allow pH
instruments to work properly. In short, to measure the pH, you have to
contaminate the water! Sort of a Heisenberg Uncertainty Principle-thing.
Also remember-just because the water is distilled or deionized, doesn't mean
it is "pure". Both processes leave different contaminants in the water.

Dave S.
Who has a MS in Chemistry

"Edwin V. Lacy" wrote:

> On Sun, 5 Dec 1999, W. Edinger wrote:
>
> > Finally, most pH meters will read tap water - yes, even certifiable pH
> > 7.0 tap water - at around 5.4-5.7 due to a fluke in the way the
> > electrodes work.
>
> What is the pH of distilled water?
>
> Ed Lacy
> el2@-----.edu
>
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