# Council Directive of 21 December 1988 on the approximation of the laws of the Member States relating to quick-frozen foodstuffs for human consumption (89/108/EEC), Article 4

Extent: E+W+S+N.I.

The cryogenic media authorized, to the exclusion of all others, for use in direct contact with quick-frozen foodstuffs shall be the following:
air,
nitrogen,
carbon dioxide.
By way of derogation from the first paragraph, Member States may retain until 31 December 1992 national laws authorizing the use of dichlorodifluoromethane (R 12) as a cryogenic medium.
The purity criteria to be satisfied by those cryogenic media shall be determined, as far as necessary, by the Commission. Those measures, designed to amend non-essential elements of this Directive by supplementing it, shall be adopted in accordance with the regulatory procedure with scrutiny referred to in Article 12(2).

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Source: https://www.legislation.gov.uk/eudr/1989/108/article/4 (the official version)
Page: https://openlegislation.uk/eu-directive-1989-108/article-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.