aTotal Nitrogen per cent by weight, minimum 19.0 Nitrate nitrogen per cent by weight, maximum 4.0 Ammonical nitrogen per cent by weight, maximum. 4.5 Urea nitrogen in nitrogen,percentby weight,min 10.5 Water soluble Phosphate (as P2O5) per cent by weight, minimum. 19.0 Water soluble potash as K2O per cent by weight, minimum. 19.0 Sodium as NaCl per cent by weight, on dry basis 0.3 Matter insoluble in water per cent by weight, maximum. 0.5
