... / Reagent 2 Purity: 99-99.5% Activator Sedimentation Magnesium Sulfate 7-Water ____________________________________________________ Introduction1)Magnesium is an important element in chlorophyll ... %99 %Magnesium, Mg9.4 %9.5 %Sulphur, S12.6 %12.7 %Heavy Metals Arsenic, As1 ppm1 ppmMercury, Hg1 ppmnot detectedLead, Pb1 ...