# The Measuring Instruments Regulations 2016, Paragraph 7.2.1


The variation of the measurement result after the durability test, when compared with the initial measurement result, shall not exceed:
— 3 % of the metered volume between Q1 included and Q2 excluded;
— 1.5 % of the metered volume between Q2 included and Q4 included.

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Source: https://www.legislation.gov.uk/uksi/2016/1153/schedule/1C/paragraph/7.2.1 (the official version)
Page: https://openlegislation.uk/measuring-instruments-regulations-2016/schedule-1C/paragraph-7.2.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.