Chapter Note 31
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Fertilisers
Notes:
(a) Animal blood of heading No. 05.11;
(b) Separates chemically defined compounds (other than those answering to the descriptions in Noter 2(a), 3(a), 4(a), or 5 below); or
(c) Cultured potassium chloride crystals (other than optical elements) weighing not less than 2.5 g each of heading No. 38.24; optical elements of potassium cholride (heading No. 90.01).
(i) Sodium nitrate, whether or not pure;
(B) Fertilisers consisting of any of the goods described in (A) above mixed together.
(ii) Ammonium nitrate, whether or not pure;
(iii) Double salts, whether or not pure, of ammonium sulphate and ammonium nitrate;
(iv) Ammonium sulphate, whether or not pure;
(v) Double salts (whether or not pure) or mixtures of Calcium nitrate and Ammonium nitrate;
(vi) Double salts (whether or not pure ) or mixtures of clcium nitrate and magnesium nitrate;
(vii) Calcium Cyanamide, whether or not pure or treated with oil;
(viii) Urea, whether or not pure.
(C) Fertilisers consisting of ammonium chloride or of any of the goods described in (A) or (B) above mixed with chalk, gypsum or other inorganic non-fertilising substances.
(D) Liquid fertilisers consisting of the goods of sub-paragraph (A) (ii) or (viii) above, or of mixtures of those goods, in an aqueous or ammonical solution.
(i) Basic slags;
(B) Fertiliser consisting on any of the goods described in (A) or (B0 above, but with no account being taken of the fluorine content limit, content limit.
(ii) Natural phosphate of heading No. 25.10, calcined or further heat-treated than for the removal of impurities;
(iii) Superphosphates (single, double or triple);
(iv) Calcium hudrogenorthophosphate containing not less than 0.2% by weight of fluorine calculated on the dry anhydrous product.
(C) Fertilisers consisting of any of the goods described in (A) or (B) above, but with no account being taken of the flurine content limit, mixed with chalk, guypsum or other inorganic non-fertilising substances.
(i) Crude natural potassium salts (for example, carnallite, kainite and sylvite);
(B) Fertilisers consisting of any of the goods described in (A) above mixed together.
(ii) Potassium chloride, whether or not pure, except as provided in Note 1(c) above;
(iii) Potassium sulphate, whether or not pure;
(iv) Magnesium potassium sulphate, whether or not pure.