Oxygen Vapor Permeability Device

Product Information
OX2/231 is based on the equivalent pressure method and can be used professionally in determining the oxygen transmission rates of film and packaging products, including plastic films, composite films, sheets, plastic bottles, plastic bags and pouches and other similar packaging materials.

Testing Principle
The pre-prepared sample is mounted between the lower and upper chambers under ambient atmospheric pressure. One of the chambers contains oxygen, and the other is filled with nitrogen by introducing a slow flow of nitrogen. Due to the concentration difference between the two chambers, oxygen molecules pass through the sample and migrate towards the nitrogen side, and from there they go to the coulometer sensors, where they produce the relevant amount of electrical signal. The oxygen transmission rate is obtained by analyzing and calculating these signals. In packaged samples, high purity nitrogen flows into the package and oxygen flows out of the package.