Thanks for the references bimr, I didn't want to go looking for them all.
I have seen lower Cl values in some end user specs. but 25ppm is the lowest that I have encountered.
50ppm Cl, and/or 100microS conductivity, and 6.5-8.5 for pH is fairly common.
Drinking water in the US is limited to 250mg/l and a TDS or 500mg/l.
= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed