# The Sludge (Use in Agriculture) Regulations 1989, Paragraph 3

Extent: E+W+S

Each sample shall be analysed so as to determine–
(a) the pH value thereof;
(b) the percentage content of dry matter, organic matter, nitrogen and phosphorus; and
(c) the concentration in milligrams per kilogram of dry matter of–
(i) chromium;
(ii) the elements listed in column 1 of the sludge table below.

---
Source: https://www.legislation.gov.uk/uksi/1989/1263/schedule/1/paragraph/3 (the official version)
Page: https://openlegislation.uk/sludge-use-in-agriculture-regulations-1989/schedule-1/paragraph-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.