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Sell Ferrous Sulphate 2006-12-17 19:40:41
Index: specification, test result 1) Assay (FeSO4, 7H2O): 99.5 - 104.5%, 100.35% 2) Arsenic: <0.0003%, 0.0002% 3) Organic volatile impurities: pass, pass 4) Lead: <0.001%, 0.0008% 5) Mercury: pass, pass ...