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Old 11/28/2005, 10:32 PM
dmbnpj dmbnpj is offline
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Join Date: Mar 2005
Location: north carolina
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Calibrate with NaCl - TDS meter?

This is what it says on the back of my TDS meter. It is a T.D.S. & TEMP. HM Digital meter. On the back it says "calibrate with NaCl?" Does anyone know what this means and how to do it?
(?salt?)

Thanks,
Jeff