The Fertilisers Regulations 1990

Limits of variation

6.—(a) In the case of materials in Groups 1 to 4 of Section B of the following table which are not sold or offered for sale as EEC fertilisers and where the declared content of one or more of the nutrients falls below the following levels —

(i) in the case of nitrogen (N) — 3.5%, and

(ii) in the case of phosphorus pentoxide (P₂O₅) and potassium oxide (K₂O) — 5.5%

the limit of variation for the declared nutrient in such cases shall be that specified in the sixth column of the following table.

(b) Subject to subparagraph (c) below, in the case of materials in Group 2 of Section C of the following table which are not sold or offered for sale as EEC fertilisers, and of which the declared content of one or more nutrients falls below the level specified in subparagraph (a) above, the limit of variation for the nutrients declared shall be that specified in the sixth column of the table for the corresponding class of fertiliser in Section B.

(c) In the case of NPK fluid fertilisers which are solutions, the limit of variation specified in subparagraph (b) above shall apply to nitrogen (N) when declared below the level of 2.5% and to phosphorus pentoxide (P₂O₅) and potassium oxide (K₂O) when declared below the level of 3.5%; and in the case of such fertilisers which are suspensions they shall apply to phosphorus pentoxide (P₂O₅) and potassium oxide (K₂O) when declared below the level of 4.5%.