RE: NANFA-- conversion factors

Bruce Stallsmith (
Wed, 06 Mar 2002 11:24:29 -0500

I would agree with Al. I didn't realize you were specifically trying to
calculate NaCl ppt, that's somewhat different from calculating TDS of
natural freshwaters. A lot of different things in solution can contribute to
conductance, so Al's suggestion of a standard curve would allow you to
narrow your results. If you're REALLY serious about accurate results, you
gotta spring the several thousand dollars for a real salinometer. (When
you're through with it, could I borrow it?)

--Bruce Stallsmith
Huntsville, AL, US of A

>I would make up my own stock solutions, at least
>three, of known salt concentration and then draw a
>curve through it ... and then note where your water
> redce the non'linearity of the measurement
>you should make stock solutions that fall beyond
>either end of your desired concentration. Note
>microsiemens will include any conductable impurity of
>your water, so if your pond/tank water already has a
>number of minerals in it you will have to take that in
>account too....just use it instead of deonized water
>when you make your stock solutions, and use some
>without adding any salt as a baseline.
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