# The Air Quality Limit Values (Wales) Regulations 2002, Paragraph

Extent: E+W

ISO 7996: 1985 Ambient air — determination of the mass concentrations of nitrogen oxides — chemiluminescence method .

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Source: https://www.legislation.gov.uk/wsi/2002/3183/schedule/6/part/II/paragraph/wrapper27n1 (the official version)
Page: https://openlegislation.uk/air-quality-limit-values-wales-regulations-2002/schedule-6/part-II/paragraph-wrapper27n1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.