The Fertilisers Regulations 1990

Limits of variation

7.  The limits of variation permitted in respect of the declared content for the forms of nitrogen or the declared solubilities of phosphorus pentoxide shall be as follows:

(a) except as provided in sub-paragraph (b) of this paragraph, the limit of variation shall be one-tenth of the overall content of the nutrient concerned with a maximum of 2% by weight:

• Provided that the overall content of that nutrient remains within—

  (i)

  the levels specified in the third column of the following table save as respects the materials in Groups 1 to 4 of Section B and Group 2 of Section C of the said table which are not sold or offered for sale as EEC fertilisers;

  (ii)

  the limits of variation specified in the fifth or, where appropriate, the sixth column of the said table;

(b) in the case of materials in Group 1(c) of Section A and Groups 1, 2, 3 and 5 of Section B and Groups 1(d) and 2 of Section C of the following table which are not sold or offered for sale as EEC fertilisers the limits of variation for ureic nitrogen when declared at 10% and above shall be plus or minus 1.5% by weight and when declared below 10% shall be plus or minus 1.0% by weight.