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How is oxygen permeability measured? July 22,2020.

The oxygen transmission rate test system is suitable for plastic films, high barrier materials, solar backplanes, sheets, composite materials, aluminized films, co-extruded films, aluminum foil, sheet materials and plastics, rubber, paper, and glass Oxygen transmission rate test for packaging containers such as bottles, bags, cans, boxes, etc., made of metal and other materials.

There are two methods for testing oxygen transmission rate: equal pressure method and differential pressure method:

In the isobaric test environment, the pre-processed sample is clamped between the test chambers, oxygen or air flows on one side of the film, high-purity nitrogen flows on the other side of the film, and oxygen molecules diffuse through the film to In the high-purity nitrogen on the other side, the flowing nitrogen is carried to the sensor. By analyzing the oxygen concentration measured by the sensor, parameters such as oxygen transmission rate can be calculated; for packaging containers, the high-purity nitrogen is The inside of the container flows, and the air or high purity oxygen surrounds the outside of the container.

In the differential pressure method environment, oxygen will move from the high pressure side to the low pressure side

The oxygen flow rate is large, the transmission rate will increase

The GBPI oxygen transmission rate test can be easily installed by the user; the practical built-in operating program reduces operating errors, the prompt screen can remind the operator to input accurately, the safety protection system avoids the sensor damage and does not need to adjust the flow rate.

GBPI is a manufacturer specializing in the production of oxygen permeability meters, gas permeability meters, moisture permeability meters, oxygen transmission rate testers, and other packaging testing instruments.


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