# The Classification and Labelling of Explosives Regulations 1983, Paragraph 5


(1) The Division number appropriate for the contents when in the packaging on which the label is put shall be written in the upper half of the label.
(2) The Compatibility Group letter appropriate for the contents when in the packaging on which the label is put shall be written in the lower half of the label.
(3) Below the Compatibility Group letter, the Class number “1” shall be written in the bottom corner of the label.
(4) The label shall have a line at least 1mm wide approximately 5mm inside the edge and running parallel to it.

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Source: https://www.legislation.gov.uk/uksi/1983/1140/schedule/3/paragraph/5 (the official version)
Page: https://openlegislation.uk/classification-and-labelling-of-explosives-regulations-1983/schedule-3/paragraph-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.