12. September 2023
Reading time: 5 min
Personal protection: Oxygen (Ox) and toxic gases (Tox)
Oxygen (Ox) is, along with nitrogen, the main component of unpolluted ambient air in near-ground layers of the atmosphere and is necessary for the respiration of living organisms. It is thus one of the foundations of our lives. The oxygen content of the air is about 20.9 vol.%. 78 vol.% is...