# The Air Quality Standards (Wales) Regulations 2007, Part 3: Ozone


Reference method
Analysis of ozone
UV photometric method (ISO FDIS 13964 or equivalent)
Calibration of ozone instruments
The Reference UV photometer method (ISO FDIS 13964, VDI 2468, B1.6 or equivalent)

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Source: https://www.legislation.gov.uk/wsi/2007/717/schedule/9/part/3 (the official version)
Page: https://openlegislation.uk/air-quality-standards-wales-regulations-2007/schedule-9/part-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.