# The Air Quality Limit Values (Wales) Regulations 2001, Part I: Reference method for the analysis of sulphur dioxide;


ISO/FDIS 10498 (Standard in draft) Ambient air – determination of sulphur dioxide – ultraviolet fluorescence method.

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Source: https://www.legislation.gov.uk/wsi/2001/2683/schedule/6/part/I (the official version)
Page: https://openlegislation.uk/air-quality-limit-values-wales-regulations-2001/schedule-6/part-I
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.