G2/131 Gas Permeability Tester

  • Contact Us
Short Description
  • G2/131 is based on differential pressure method and applicable to the determination of gas transmission rate, solubility coefficient, diffusion coefficient and permeability coefficient of barrier materials and packages at different temperatures.

Get a quote

  • Please contact us to request a quote or further information
  • Contact Us
Product Overview
  • G2/131 is based on the differential pressure method, and is professionally applicable to the determination of gas transmission rate, solubility coefficient, diffusion coefficient and permeability coefficient of plastic films, composite films, high barrier materials, sheets, and aluminum foils at different temperatures. The system is equipped with three diffusion cells, which could test specimens simultaneously with individual test results. The testing process conforms to GB, ISO, ASTM and other international standards.


    • System provides proportional and standard test modes with convenient parameter settings
    • The gas transmission rate as well as the coefficients of permeability, solubility and diffusion can be obtained at one operation
    • 3 distinct or identical specimens can be tested simultaneously with the individual test results
    • Wide test range for different materials with high, medium and low barrier properties
    • Various types of gases are testable: sole gas, mixed gases, poisonous gases, explosive gases and other dangerous gases (customization is required)
    • World exclusive data fitting function that could easily calculate gas permeability and other parameters at different temperatures
    • Top quality parts and components made by world famous brands are used to ensure reliable overall product performance
    • Reference film for fast calibration ensures accurate and universal test data


    G2/131 utilizes Labthink's latest embedded computer control system that provides a better performance than traditional single chip system.

    • Patented integrated design of three test cells improves the test efficiency and reduces the space occupancy of the instrument
    • Embedded computer control system provides safer and more reliable data management as well as test operation
    • The instrument can be easily operated with a mouse, a keyboard, and a monitor, without requiring a PC
    • The system is equipped with four USB ports and dual Internet ports for convenient data transmission


    The instrument is equipped with Labthink's latest intelligent operating software, with user-friendly operating interface and intelligent data management. It also supports LystemTM Lab Data Sharing System, which ensures uniform management of test results and test reports.

    • Status monitoring and intelligent reminding of sensor calibration ensure instrument in the best working condition
    • The system automatically calculates the statistical information of instrument utilization rate and test times
    • Embedded help document for user viewing at any time
    • Multi-level account control for better data management and protection
    • The system utilizes embedded data saving technology to save detailed information and provide convenient and various searching and viewing functions
    • One time value input and the system automatically gives data comparison after each test
    • Supports LystemTM Lab Data Sharing System for uniform and systematic data management


    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 side. The gas permeability and other barrier properties of the specimen can be obtained by monitoring the pressure changes in the lower chamber.

  • SpecificationsFilm Test
    Test Range0.05~50,000 cm3/m2·24h·0.1MPa
    Temperature Range15°C~55°C (room temperature 23°C)
    Temperature Accuracy±0.1°C (standard)
    Humidity Range0%RH, 2%~98.5%RH, 100%RH (humidity generator is optional)
    Humidity Accuracy±1%RH
    Vacuum Resolution0.1Pa
    Vacuum Degree of Test Chamber<20 Pa
    Number of Specimens3 with independent test results
    Specimen SizeΦ97 mm
    Test Area38.48 cm2
    Test GasO2, N2 and CO2 (outside of supply scope)
    Test Pressure-0.1MPa~+0.1MPa
    Gas Supply Pressure0.4 MPa~0.6 MPa
    Port SizeΦ6 mm PU Tubing
    Instrument Dimension690 mm (L) x 350 mm (W) x 360 mm (H)
    Power Supply220VAC 50Hz / 120VAC 60Hz
    Net Weight71 kg
  • ASTM D1434
  • ISO 15105-1
  • ISO 2556

Sign up to our newsletter

Keep up to date with company news, product launches and industry news.

Sign up