The ionic concentration will be as variable as the process and can change over night as well. Batches must be run exactly alike for a degree of uniformity and there are a lot of environmental and electrical variables.
Ken

At 10:40 PM 10/18/01 +1000, you wrote:
>>>>
This is for those of us wanting to figure PPM CS without access to a testing facility, known PPM CS, or one of those PWT meters. Judging from most reports, home-made CS, whether LVDC or HVAC, is primarily ionic. Thus PMM and conductivity should be more-or-less directly proportional. But how to figure the conversion factor? Can anyone supply a reliable conductivity equivalence between an assumed ionic CS solution of X PPM to that of a saline solution of Y PPM (or gm/l) NaCl? This would then allow anyone with a cheap DMM attached to any convenient fixed arrangement of paired wires to figure PPM. Answers gratefully received.

regards, Kevin Nolan

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