tag:www.gov.uk,2005:/search/guidance-and-regulation Guidance and regulation 2025-02-04T10:24:08+00:00 HM Government tag:www.gov.uk,2005:/government/publications/storing-and-depressurising-nominally-empty-nitrous-oxide-canisters-rps-289 2025-02-04T10:24:08+00:00 Storing and depressurising nominally empty nitrous oxide canisters: RPS 289 Environment Agency regulatory position on the temporary storage and controlled depressurising of nominally empty discarded nitrous oxide canisters.