You did help me with this a couple years or more ago. There is something in the water here that does not distill out easily. .4uS double distilled water makes perfect CS, .4uS single distilled does not, except when the river that is the source of the town water is very high.

You helped me go through and take readings during making several batches of CS, and consider several other possibilities. The only thing that came up is it had to be the water, and it was. You also tested some DW for me, too.

So basically I now do what I need to do, and everything is perfectly consistent and repeatable. I can make fine CS with higher uS water if the ppm is kept very low, but I prefer my CS to be 10-15 ppm as that is what works best for me. I have experimented with low ppm CS several times, and just don't get the same results as other people report from it.
sol

Robert Berger wrote:

Sol, if you can't marke good EIS with as PWT reading of 3.0 then your process is in trouble. Off line please describe you setup and operating conditions. maybe I can help you. "Ole Bob"



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