# The Radioactive Substances (Electronic Valves) Exemption Order 1967, Schedule


1
2
3
Cobalt 60
0·1
1
Nickel 63
0·1
1
Caesium 137
0·1
1
Thorium (any isotope of)
0·1
1
Thallium 204
0·1
1
Radium 226
0·1
1
Uranium (any isotope of)
0·1
1
Carbon 14
1
10
Chlorine 36
1
10
Promethium 147
5
30
Krypton 85
10
100
Tritium
150

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Source: https://www.legislation.gov.uk/uksi/1967/1797/schedule (the official version)
Page: https://openlegislation.uk/radioactive-substances-electronic-valves-exemption-order-1967/schedule
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.