# Fertilisers (Sampling and Analysis) Regulations (Northern Ireland) 1996, Paragraph 5: APPARATUS


5.1 Rotary shaker set at about 35 to 40 rpm.
Note:
Where the boron content of an extract is to be determined, do not use borosilicate glassware. Teflon or silica is preferable for this extraction. Rinse the glassware thoroughly if it has been washed in detergents containing borates.

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Source: https://www.legislation.gov.uk/nisr/1996/513/schedule/2/part/I/chapter/26b./paragraph/5 (the official version)
Page: https://openlegislation.uk/fertilisers-sampling-and-analysis-regulations-northern-ireland-1996/schedule-2/part-I/chapter-26b./paragraph-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.