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GPT-301 Gas Permeability Tester

Model Number: W/061

Reference Price:$ 5000.00~10000.00
GPT-301 is based on the differential pressure method, and is professionally applicable to the determination of gas transmission rate as well as solubility coefficient, diffusion coefficient and permeability coefficient of plastic films, composite films, high barrier materials, sheeting and aluminum foils.
Gas transmission rate, solubility coefficient, diffusion coefficient and permeability coefficient of the specimen could be obtained at one operation
3 distinct or equivalent specimens could be tested individually with independent test results at one operation
Wide range and high precision temperature and humidity control to meet various test conditions
The instrument comes with two test modes: proportional mode and Fuzzy Model.
Test range could be extended based on user requirements to test the materials with high permeability
Test results could be easily obtained even at extreme conditions by data fitting function, which could work at any temperature
The instrument could be used to test poisonous, inflammable, and explosive gases (customization required)
The instrument is controlled by computer and test process is automatic
Reference film for fast calibration to ensure accurate and universal test data
–  Standard RS232 port for convenient data transfer
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 two chambers. The gas permeates through the specimen from the higher pressure side into the lower side. The gas permeability and other barrier properties of the specimen can be obtained by monitoring the pressure changes in the lower chamber.
ISO 15105-1,ISO 2556,GB/T 1038-2000,ASTM D1434,JIS K7126-1,YBB00082003
Basic ApplicationsFilmsIncluding plastic films, plastic composite films, paper-plastic composite films, coextruded films, aluminized films, aluminum foils, aluminum foil composite films and many others
SheetingIncluding engineering plastics, rubber and building materials, e.g. PP, PVC, and PVDC
Extended ApplicationsVarious GasesTest the permeability of various types of gases, e.g. O2, CO2, N2, Air and He
 Inflammable, Explosive GasesTest the permeability of inflammable and explosive gases
Biodegradable FilmsTest gas permeability of various sorts of biodegradable films, e.g. starch-based biodegradable bags
Materials for Aerospace UsageThis instrument can test the Helium permeability of airship gas bags
Paper and Paper BoardTest gas permeability of paper and paper-plastic composite materials, e.g. aluminized paper for cigarette packages, Tetra Pak sheeting, paper bowls for instant noodles and disposable paper cups
Paint FilmsTest gas permeability of substrates coated paint films
 Glass Fiber Cloth and PaperIncluding glass fiber cloth and paper materials, e.g. Teflon paint cloth, Teflon welding cloth and Teflon silicon rubber cloth
Soft Tube Materials for CosmeticsIncluding various types of cosmetic tubes, aluminum-plastic tubes and toothpaste tubes
Rubber SheetingIncluding various sorts of rubber sheeting, e.g. car tires
Technical specifications:
SpecificationFilm Test
Test Range0.05 ~ 50,000cm³ /m²·24h·0.1MPa (standard volume)
At least 500,000 cm³ /m²·24h·0.1MPa (extended volume)
Number of Specimens3 (with independent test results)
Vacuum Resolution0.1 Pa
Vacuum Degree of Test Chamber<20 Pa
Temperature Range5℃~95℃
Temperature Accuracy±0.1℃
Humidity Range0%RH, 2%RH ~ 98.5%RH, 100%RH (humidity generator is optional)
Humidity Accuracy±1%RH
Specimen SizeΦ97 mm
Test GasO2, N2, and CO2 (outside of supply scope)
Test Pressure-0.1 MPa ~ +0.1 MPa (standard)
Gas Supply Pressure0.4 MPa~0.6 MPa
Port Size6 mm PU Tubing
Instrument Dimension760 mm (L) × 575 mm (W) × 450 mm (H)
Power SupplyAC 220V 50Hz
Net Weight88 kg

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