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Some poly aluminum chloride varieties have a very low pH. Depending on the dosage, this could keep more phosphate in solution rather than forming salts which would precipitate and go with the floc. There are other PAC’s with more basic properties that ...

The phosver 3 test has the least interferences. The 0.22 micron filter will tell you reactive po4 and non filtered ortho po4 which should be compared. The phosver3 can be diluted to increase the range as it is 0-1.6 ppm.. ------------------------------ ...

Gary, I have very little waste treatment experience, but I did troubleshoot a pharmaceutical plant having problems with a phosphate increase in their wastewater effluent. To determine if it was chemical (poor reaction) or physical (poor settling) we ran ...