Class I, Group B
What is the category for Class I, Group B?
For Class I, Group B, category is gas group; iec / atex designation is IIB + H2; basis or note is Hydrogen, recorded from its source on 2026-08-06.
IIB + H2 | Hydrogen | Class I, Group B | Hydrogen
— e2s.com, retrieved 2026-08-06
- Category
- gas group our reading
- North American designation
- Class I, Group B verified
- IEC / ATEX designation
- IIB + H2 verified
- Basis or note
- Hydrogen verified
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
Source
- e2s.comhttps://www.e2s.com/guide-for-hazardous-areas/gas-and-dust-groups