# The Air Quality (Ozone) (Wales) Regulations 2003, Schedule 6: REFERENCE METHODS FOR ANALYSIS OF OZONE AND CALIBRATION OF OZONE INSTRUMENTS


The reference method for analysis of ozone shall be the UV photometric method (ISO FDIS 13964).
The reference method for calibration of ozone instruments shall be the Reference UV photometer method (ISO FDIS 13964, VDI 2468, B1.6).

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Source: https://www.legislation.gov.uk/wsi/2003/1848/schedule/6 (the official version)
Page: https://openlegislation.uk/air-quality-ozone-wales-regulations-2003/schedule-6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.