White crystalline powder, assay ≥99.0%, P2O5 ≥52.0%, K2O ≥34.0%, pH 4.2–4.7 (0-52-34). Food grade serves as an acidity regulator and nutrient fortifier, feed grade supplies phosphorus and potassium, and technical grade is an 86%-nutrient water-soluble fertiliser for drip irrigation, foliar spraying and NPK compounding. 25 kg/1200 kg bags.