OTR & WVTR Combo-Tester - Barrier Testing For OTR & WVTR-IN ONE UNIT!

ASTM D3985, ASTM F1307, ASTM F1249, ISO 15106-2

C406H Oxygen /Water Vapor Transmission Rate Test System is based on the testing principle of Coulometric oxygen sensor and infrared water vapor sensor. It is suitable for testing the oxygen and water vapor transmission performance of films, sheets and related materials in the fields of food, medicine, medical devices, daily chemicals, photovoltaic, electronic and many others

Instrument Advantages

• OTR/WVTR tested in One Instrument
• Labthink ppb level Coulometric Oxygen Sensor
• Labthink patented infrared moisture sensor
• High Efficiency 6 Test Cells
• Intelligent Operation, Safe and Reliable

Oxygen Transmission Rate Tester (Coulometric Sensor Method)

ASTM D3985 and ISO 15105-2

C230H Oxygen Transmission Rate Tester is based on Coulometric oxygen analysis sensor and equal pressure test method. this series of Oxygen tranmission rate tester is equipped with ppb level Coulometric Oxygen Sensor of Labthink which can obtain lower test limit. It provides high-precision and high-efficiency oxygen permeability tests for high and medium gas barrier materials.

Testing Principle
The sample is clamped between the test chambers, oxygen or air flows on one side of the film, and high-purity nitrogen flows on the other side of the film. Oxygen molecules diffuse through the film into the high-purity nitrogen in the other side. The flowing nitrogen is carried to the sensor. Through the analysis of the oxygen concentration measured by the sensor, the oxygen transmittance is calculated.

Oxygen Transmission Rate Tester (Differential-pressure Method)

ASTM D1434, ISO 15105-1, ISO 2556, JIS K 7126-A

C130H Gas Permeability Testers are based on differential pressure method and professionally applicable in the measurement of gas (O², CO², N²) permeability rate, solubility coefficient, diffusion coefficient and permeability coefficient of barrier materials。

Summary of Test Method
The pre-conditioned specimen is mounted in the gas diffusion cell as to form a sealed barrier between two chambers. The lower-pressure chamber is firstly evacuated, followed by the evacuation of the entire cell. A flow of gas is thereafter introduced into the evacuated higher-pressure chamber and a constant pressure difference is generated between the two chambers. The gas permeates through the specimen from higher pressure side into the lower pressure side. The gas permeability and other barrier properties of the specimen can be obtained by monitoring the pressure changes in the lower chamber.