... 0-3.02.4As, % , ≤0.00080.0001Pb , % , ≤0.00150.0001Non-soluble, % , ≤0.50.4 C.Application features:1. The economy, high ... using, will polymer iron sulfate in a certain concentration (10-30%) into soluble alum pool, injection water mixing make full hydrolysis, quiet ... original use equipment need not make big transformation, just add soluble alum pool can use polymeric ferric sulfate.9, polymeric ferric ...