... on dry ,% Reducingsubstances, %PH Sulfate ,% Chloride ,% Pb ,ppm Arsenic salt ,ppm Heavy metals ,ppm White or yellowishcrystal powdersin accordance withstandard98.00 ... on dry ,% Reducingsubstances, %PH Sulfate ,% Chloride ,% Pb ,ppm Arsenic salt ,ppm Heavy metals ,ppm White crystal powdersin accordance withstandard98.0-102 ... .003 max0.003 max1 max0.1 max3 max sodium gluconate industry/food grade 98%min