BS EN IEC 60376:2018 Specification of technical grade sulphur hexafluoride (SF6) and complementary gases to be used in its mixtures for use in electrical equipment .

Sulfur hexafluoride
Determination of content
Electrical insulating materials
Safety measures
Impurities
Materials handling
Properties
Gases

Link: BS EN IEC 60376:2018 Specification of technical grade sulphur hexafluoride (SF6) and complementary gases to be used in its mixtures for use in electrical equipment .
Source: BSI Standards