# Fertilisers (Sampling and Analysis) Regulations (Northern Ireland) 1996, Paragraph 6: PREPARATION OF THE SOLUTION TO BE ANALYSED


Preparation of the boron solution
6.1 See Methods 25a and/or 25b and, if appropriate, 25c.
Preparation of the test solution
6.2 Dilute an aliquot portion of extract (6.1) to obtain a boron concentration as specified in 7.2. Two successive dilutions may be necessary. Let D be the dilution factor.
Preparation of the correction solution
6.3 If the test solution (6.2) is coloured, prepare a corresponding correction solution by placing in a plastic flask 5 ml of test solution (6.2), 5 ml of EDTA buffer solution (4.1) and 5 ml of water and mix thoroughly.

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Source: https://www.legislation.gov.uk/nisr/1996/513/schedule/2/part/I/chapter/25e./paragraph/6 (the official version)
Page: https://openlegislation.uk/fertilisers-sampling-and-analysis-regulations-northern-ireland-1996/schedule-2/part-I/chapter-25e./paragraph-6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.