Masterchem Potassium Sulphate Powder Fertilizer (SOP) | 25kg is a premium, water-soluble source of two essential plant nutrients: Potassium (K₂O) and Sulphur (S). It is a chloride-free fertilizer, making it the ideal potassium source for chloride-sensitive crops and for improving quality in high-value produce. The 25kg bag is a standard commercial size for farmers, greenhouse operators, and large-scale horticulturists.