# Fertilisers (Sampling and Analysis) Regulations (Northern Ireland) 1996, Paragraph 2: PRINCIPLE


The test sample is sieved on a nest of three sieves, either by hand or by mechanical means. The mass retained on each sieve is recorded and the percentage of material passing the required sieves is calculated.

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Source: https://www.legislation.gov.uk/nisr/1996/513/schedule/2/part/I/chapter/14e./paragraph/2 (the official version)
Page: https://openlegislation.uk/fertilisers-sampling-and-analysis-regulations-northern-ireland-1996/schedule-2/part-I/chapter-14e./paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.