# The Dangerous Substances and Explosive Atmospheres Regulations 2002, Paragraph 2


In particular, the following categories of equipment must be used in the zones indicated, provided they are suitable for gases, vapours, mists, dusts or mists and dusts, as appropriate:
—0 in zone 0 or zone 20, category 1 equipment,
—0 in zone 1 or zone 21, category 1 or 2 equipment,
—0 in zone 2 or zone 22, category 1, 2 or 3 equipment.

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Source: https://www.legislation.gov.uk/uksi/2002/2776/schedule/3/paragraph/2 (the official version)
Page: https://openlegislation.uk/dangerous-substances-and-explosive-atmospheres-regulations-2002/schedule-3/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.