Not applicable to oxygen for medical, breathing or electronics applications.Cross References:BS 349BS 4314:Part 1BS 4559:Part 1:Section 1.1BS 4559:Part 3BS 4559:Part 4BS 4559:Part 5:Section 5.1BS 4559:Part 5:Section 5.3BS 4559:Part 5:Section 5.4BS 4559:Part 5:Section 5.6BS 4559:Part 6BS 4559:Part 7BS 4559:Part 8BS 4559:Part 9:Section 9.1BS 4559:Part 9:Section 9.2BS 5045:Part 1BS 5309:Part 2BS 4366BS 5443BS 5750Pressure Systems and Transportable Gas Containers Regulations 1989Classification, Packaging and Labelling of Dangerous Substances Regulations 1984