Oxygen-free may refer to the absence of
oxygen in an environment or in a material.
Not to be confused with free oxygen, oxygen in the atmosphere of Earth that is not combined with other elements and may be breathed by living beings.
Environmental conditions
-
Hypoxia (environmental), an environment with low, or near-zero, oxygen content, commonly called anoxia;
-
Anaerobic (disambiguation), a technical word which literally means without air (where "air" is generally used to mean oxygen), as opposed to aerobic;
-
Aerobic (disambiguation), antonym of anaerobic
Oxygen-free materials
-
Oxygen-free copper, pure copper without oxygen in its crystal lattice;
-
OFHC, oxygen-free high thermal conductivity copper;
-
CuOFP, oxygen-free pure copper containing phosphorus
