# Fertilisers (Sampling and Analysis) Regulations (Northern Ireland) 1996, Paragraph 8: EXPRESSION OF RESULT


Express the result of the analysis as a percentage of chloride contained in the sample as it has been received for analysis.
Calculation: calculate the percentage of chloride (Cl) with the formula:
%Cl=0.003546×(Vz-Vcz)-(Va-Vca)×100M where:
Vz = number of millilitres of silver nitrate added
Vcz = number of millilitres of silver nitrate used in the blank test
Va = number of millilitres of ammonium thiocyanate used for the titration of the sample
Vca = number of millilitres of ammonium thiocyanate used for the titration of the blank
M = mass in grams of the sample in aliquot volume taken for titration

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Source: https://www.legislation.gov.uk/nisr/1996/513/schedule/2/part/I/chapter/12./paragraph/8 (the official version)
Page: https://openlegislation.uk/fertilisers-sampling-and-analysis-regulations-northern-ireland-1996/schedule-2/part-I/chapter-12./paragraph-8
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.