# The Fertilisers Regulations 1990, Paragraph 9


In the case of fluid fertilisers, additional information on the fertilising components may be expressed in equivalent terms of weight versus volume (kilograms per hectolitre or grams per litre). Quantities of a fluid fertiliser shall be expressed by mass, and may also be expressed by volume.

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Source: https://www.legislation.gov.uk/uksi/1990/887/schedule/2/paragraph/9 (the official version)
Page: https://openlegislation.uk/fertilisers-regulations-1990/schedule-2/paragraph-9
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.