Oxygen ( O₂ )
Oxygen is found on Earth as a gas and constitutes about 21% of the air we breathe. Elemental molecular oxygen consists of two oxygen atoms bonded together. A photochemical reaction of oxygen is (ultimately) responsible for the production of ozone in the stratosphere. Oxygen concentrations found in ice core samples have been used to determine past atmospheric levels of oxygen and helped in determining past climates.

We provide this glossary to assist clients in the selection and operation of our complete line of Ultra-Pure Laboratory Ozone Generators, Ozone Gas Analyzers, and Ozone Accessories, as well as services such as material exposure testing.