The three chamber oxygen permeability tester can simultaneously detect three samples at a time, with higher detection efficiency. Oxygen permeability tester, also known as oxygen permeability meter, is suitable for testing the oxygen permeability performance of films, sheets, paper, packaging and related materials in the fields of food, medicine, medical equipment, daily chemical, photovoltaic electronics, etc. It provides a wide range and high efficiency oxygen permeability detection for high, medium and low oxygen barrier materials.