- Carbon dioxide (6)
- Dry ice, carbon dioxide (solid) (4)
- Aerosols (5)
- Helium (1)
- Hydrogen (12)
- Neon (8)
- Nitrogen (6)
- Nitrous oxide (1)
- Oxygen, compressed or liquefied (30)
| Alberta (22)British Columbia (17) | Manitoba (5)New Brunswick (9) | Newfoundland (2)Nova Scotia (3) | Ontario (57)Prince Edward Island (1) | Quebec (20)Saskatchewan (4) |