... cation , anion, non-ion and amphoteric ion type. Water Treatment ChemicalsPAMSpecs.Item Index N A C APAppearence White granulated ... , paper-making, chemical and pharmaceutical industries, etc.; the drilling in oil industry and enhancing in oil recovery; as retention ... products of powder type, colloid type and emulsion type, water-medium dispersing type polyacrylamide has the following advantages: 1. ...