This table was updated on 06 October 2020 and refers to the new ISO 17034 scope for EffecTech in the UK only (Issue No. 001).

For the most up-to-date information, see EffecTech’s ISO 17034 scope.

Component	amount fraction range (ppm mol/mol)
hydrogen sulphide	0.2 to 10
carbonyl sulphide	0.2 to 10
methanethiol (methyl mercaptan)	0.2 to 10
ethanethiol (ethyl mercaptan)	0.2 to 10
dimethyl sulphide	0.2 to 10
1-propanethiol	0.2 to 10
(n-propyl mercaptan)	0.2 to 10
2-propanethiol	0.2 to 10
(iso-propyl mercaptan)	0.2 to 10
ethyl methyl sulphide	0.2 to 10
(methyl ethyl sulphide)	0.2 to 10
1-butanethiol	0.2 to 10
(n-butyl mercaptan)	0.2 to 10
2-methyl-2-propanethiol	0.2 to 10
(tert-butyl mercaptan)	0.2 to 10
2-methyl-1-propanethiol	0.2 to 10
(iso-butyl mercaptan)	0.2 to 10
1-methyl-1-propanethiol	0.2 to 10
(sec-butyl mercaptan)	0.2 to 10
diethyl sulphide	0.2 to 10
n-hexyl mercaptan	0.2 to 10
tetrahydrothiophene (THT)	0.2 to 10