Re: calcium nitrate tetrahydrate crystal Spec: purity 99.0pct min Heavy meatal 0.001pct max Sulphates 0.03pct max Iron 0.002pct max Chloride 0.005pct max Insoluble matter in water 0.01pct max Ph 5-7 Calcium oxide 23.4pct min Nitogen 11.76pct min Re: calcium nitrate granular Spec: n in ammonium 1.1-1.3 min N in nitrate 14.4min Cao 26% min Insoluble material in water 0.1% min Size 2-4mm or 4-7mm
