# The Radioactive Substances (Luminous Articles) Exemption Order 1985, Schedule


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Radionuclide
Maximum number of becquerels in luminescent substance incorporated in an article (Class A or Class B)
Maximum aggregate number of becquerels in luminescent substance incorporated in all Class B articles on the premises
Promethium 147
8 × 10>7>
4 × 10>9>
Tritium
4 × 10>9>
2 × 10>11>

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Source: https://www.legislation.gov.uk/uksi/1985/1048/schedule (the official version)
Page: https://openlegislation.uk/radioactive-substances-luminous-articles-exemption-order-1985/schedule
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.