# The Aerosol Dispensers Regulations 2009, Paragraph 1.9.2: Flammable foam aerosols


In the case of foam aerosols, the classification shall be made on the basis of the results of the foam flammability test.
(a) The aerosol product shall be classified as “extremely flammable” if:
(i) the flame height is 20 cm or more and the flame duration is two seconds or more; or
(ii) the flame height is 4 cm or more and the flame duration is seven seconds or more.
(b) The aerosol product which does not meet the criteria in (a) is classified as “flammable” if the flame height is 4 cm or more and the flame duration is two seconds or more.

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Source: https://www.legislation.gov.uk/uksi/2009/2824/schedule/1A/paragraph/1.9.2 (the official version)
Page: https://openlegislation.uk/aerosol-dispensers-regulations-2009/schedule-1A/paragraph-1.9.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.