potassium magnesium sulphate,organic plant food *K2O:24% , Mg:6%, *S:17% , ... 7.0~9.0 *whate soluble potassium magnesium sulphate,organic plant food Specification: Element Specification Results of Inspection K2O ... 89 Appearance 1~4mm 3~4mmTips:Potassium Magnesium Sulfate organic fertilizer is one of pure natural fertilizer in ... of the traditional products. potassium magnesium sulphate,organic plant food