... 2). high exchange capacity 3). high flexibility 4A Zeolite Powder, Used for Washing Powder and Soap1. Synonyms: Zeolite 4A, Na 4A ... our 4A zeolite detergent is as follows:Specification (test parameter, value, unit, test methods):Can exchange capacity (as anhydrous base): 310 ... Pb: 10 maximum ppm (analysis by collaborator) 4A Zeolite Powder, Used for Washing Powder and Soap