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1(d). N.P. COMPLEX FERTILISERS1. Deleted vide S.O. 377(E) dt. 29.5.19922. Diammonium Phosphate (18-46-0)(i) Moisture per cent by weight, maximum 2.5 (ii) Total nitrogen per cent by weight, minimum 18.0 (iii) Ammonical nitrogen form per cent by weight, minimum 15.5 (iv) Total nitrogen in the form of urea per cent by weight,maximum 2.5 (v) Neutral ammonium citrate soluble phosphates (as P 2O5)per cent by weight, minimum 46.0 (vi) Water soluble phosphates (as P2O5) per cent byweight, minimum 41.0 (vii) Particle size – not less than 90 per cent of the materialshall pass through 4 mm IS sieve and be retained on 1 mm IS sieve. Not more than 5 per cent shall be below 1 mm size.3. Ammonium Phosphate Sulphate (16-20-0)(i) Moisture per cent by weight, maximum 1.0 (ii) Total ammoniacal nitrogen per cent by weight, minimum 16.0 (iii) Neutral ammonium citrate soluble phosphates (as P2O5)per cent by weight, minimum 20.0 (iv) Water soluble phosphates (as P 2O5) per cent by weight,minimum