# Fertilisers (Sampling and Analysis) Regulations (Northern Ireland) 1996, Paragraph 6: EXPRESSION OF RESULTS


Percentage of material passing sieve of 0.630 mm apertures=(50-M1)×2 Percentage of material passing sieve of 0.160 mm apertures=[50-(M1+M2)]×2 where:
M1 = mass in g of residue on the sieve with 0.630 mm apertures
M2 = mass in g of residue on the sieve with 0.160 mm apertures
The results are to be rounded up to the nearest unit.

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Source: https://www.legislation.gov.uk/nisr/1996/513/schedule/2/part/I/chapter/13a./paragraph/6 (the official version)
Page: https://openlegislation.uk/fertilisers-sampling-and-analysis-regulations-northern-ireland-1996/schedule-2/part-I/chapter-13a./paragraph-6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.