# The Fertilisers Regulations 1990, Paragraph 7: Limits of variation


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.

---
Source: https://www.legislation.gov.uk/uksi/1990/887/schedule/1/paragraph/7 (the official version)
Page: https://openlegislation.uk/fertilisers-regulations-1990/schedule-1/paragraph-7
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.