Mike,
I'd say conductivity and pH combined are the best indication of rinse water
purity. pH measurements on relatively pure water can be tricky, but don't
let people tell you it can't be done or that it's meaningless. Try to get a
calibration standard solution for your conductivity bridge or meter that
matches the range of the water you're testing. If you had to pick one
measurement, I'd choose conductivity.

> Timothy Reeves
> ECD Circuit Board Division
> 13626 South Freeman Road
> Mulino, OR 97042
> [log in to unmask]
> (503) 829-9108 (800) 228-8198  FAX (503) 829-5482
>
> ----------
> From:         Michael Fenner
> Sent:         Wednesday, February 9, 2000 10:36 AM
> Subject:      Re: Saponifier concentration measurement
>
> The posts on this topic were interesting.
> For my continued education/information what does the 'net think of using
> conductivity checks on
> final rinse water as an instant process control parameter?
>
> Mike Fenner
>
>

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