GTR-V3 Gas Transmission Rate Tester (GTR Tester) is professionally applicable to determining the gas (O2, CO2, N2) transmission rate of plastic films, composite films, high barrier materials, sheeting, metal foils, rubber, tires, and permeable membranes with differential pressure method. • High precision infrared sensor is used to ensure the testing accuracy • Automatic humidity and temperature control to guarantee the stability of the testing environment • All test operations are performed on a computer with testing software. User-friendly interface for easy and simplified operation. • Test data and curves are displayed in the real time • 3 independent test chambers for 3 test samples • Automatic test operation by one-button clicking • Patented pipeline flushing design ensures cleanliness of carrier gas and high testing efficiency • Unique sample leak-proof seal installation technology enhances the seal performance of test chambers • Meeting the requirements of USP 1207 United States Pharmacopoeia Standard for data traceability, rights management and other functions, the computerized system fully meets the needs of the pharmaceutical industry (optional)

Technical Specification Testing Principle The pre-conditioned specimen is mounted in the gas diffusion cell to form a sealed barrier between two chambers. The lower-pressure chamber is first evacuated, followed by the evacuation of the entire cell. Gas is then introduced into the evacuated higher-pressure chamber, creating a constant pressure difference between the two chambers. The gas permeates through the specimen from the higher-pressure side to the lower-pressure side. By monitoring the pressure changes in the lower chamber, the gas permeability and other barrier properties of the specimen...

Test standard ASTM D1434，ISO 2556，ISO 15105-1 Configuration Standard configuration: main instrument, constant temperature controller, computer, professional software, special sampler, vacuum grease, fast quantitative filter paper, vacuum pump Optional: sampling blade, vacuum grease, vacuum pump oil, fast quantitative filter paper, humidity generator Note: The air source of the machine is ф 6mm polyurethane pipe. Gas source and distilled water are provided by users. The device appearance diagram shows the standard device appearance, the appearance of customized devices may vary.