It is used for detecting the gas permeability of various gases such as O?, CO?, N?, etc. in various films and other packaging materials.

It is applicable to the gas permeability performance testing of films, sheets, papers, packaging components and related materials in the fields of food, pharmaceuticals, medical devices, daily chemicals, photovoltaic electronics, etc. It provides a wide range and high-efficiency gas permeability detection for materials with high, medium and low gas barrier properties.
link:https://www.snlabtester.com/gas-transmittance-meter/gas-barrier-testing-equipment.html