# Ionising Radiations Regulations (Northern Ireland) 2000, Paragraph 1

Extent: N.I.

For the purpose of Regulation 2(4), the quantity ratio for more than one radionuclide is the sum of the quotients of the quantity of a radionuclide present Qp divided by the quantity of that radionuclide specified in the appropriate column of Part I of this Schedule Qlim, namely—
ΣQpQlim

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Source: https://www.legislation.gov.uk/nisr/2000/375/schedule/8/paragraph/1 (the official version)
Page: https://openlegislation.uk/ionising-radiations-regulations-northern-ireland-2000/schedule-8/paragraph-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.