# The Preservatives in Food Regulations 1989, Paragraph 1: Purpose and scope


The method described below gives a quantitative analysis of the residues of biphenyl in whole citrus fruit. The accuracy of the method is ±10 per centum for a biphenyl content greater than 10 mg. per kg. of fruit.

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Source: https://www.legislation.gov.uk/uksi/1989/533/schedule/5/part/II/paragraph/1 (the official version)
Page: https://openlegislation.uk/preservatives-in-food-regulations-1989/schedule-5/part-II/paragraph-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.