... ,fermentation,industrial,engineering plastics,fertilizers etc 1.Sepcification of Magnesium Sulphate Heptahydrate 98%ITEM INDEX RESULT PURITY 98% min 98.65% Cl ... % max As 4 ppm max 4 ppm max2.Application Magnesium Sulphate 98% is apply to medicine, microbiology industry , light industry ,chemical ... or as your requirementsDelivery Detail:In two weeks Magnesium Sulfate Heptahydrate 98%