1,2,3-benzotriazole(bta)
5-sulfo salicylic acid
ammonium acetate
chromium chloride
chromium nitrate
cobalt acetate
cobalt chloride
cobalt sulfate
dl-tartaric acid(mono/anhydrate)
edta
edta-2na
edta-4na
ferric ammonium oxalate
ferric sodium oxalate
glycine(aminoacetic acid)
hydrazine sulfate
hydroxyacetic acid
hypophosphorous acid
magnesium acetate
nickel acetate
nickel ammonium sulfate
nickel carbonate
nickel chloride
nickel fluoride
nickel nitrate
nickel sulfate
oxalic acid
phosphoric acid
potassium carbonate
potassium ferrocyanide
potassium fluoride
potassium sodium tartrate
potassium stannate
sodium ferrocyanide
sodium gluconate
sodium persulfate
stannic oxide
stannous chloride
stannous oxide
stannous sulfate
zinc chloride
zinc sulfate