GPT-201B Gas Permeability Tester

Product Introduction

GPT-201B 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, metal foils, rubber, tires and permeable membranes.

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Product Features

  • Gas transmission rate, solubility coefficient, diffusion coefficient, and permeability coefficient of the specimen could be obtained at one operation
  • High precision and wide range of temperature and humidity control to meet different test conditions
  • The instrument comes with three test modes: proportional mode, standard mode and time mode
  • Test range could be extended based on user requirements to test 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)
  • Pneumatic sample clamp system assured the reliability of the test and makes the work high efficient.
  • The instrument is controlled by the PLC control system and test process is automatic
  • Reference film for fast calibration to ensure accurate and universal test data
  • GMP three-level authority management
  • Embedded microcomputer for test result printing.
  • Professional software support real-time data display, data analysis and storage
  • Standard USB port for convenient data transfer

Test Principle

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.

Test Standards

This test instrument conforms to many national and international standards:

ISO 15105-1, ISO 2556, ASTM D1434, JIS K7126-1, GB/T 1038-2000, YBB 00082003


Basic Applications

Including plastic films, plastic composite films, paper-plastic composite films, coextruded films, aluminized films, aluminum foils, aluminum foil composite films and many others

Including engineering plastics, rubber and building materials, e.g. PP, PVC and PVDC

Extended Applications

Various Gases
Test the permeability of various types of gases, e.g. O2, CO2, N2, Air and He

Inflammable, Explosive Gases
Test the permeability of inflammable and explosive gases

Biodegradable Films
Test gas permeability of various sorts of biodegradable films, e.g. starch-based biodegradable bags

Materials for Aerospace Usage
This instrument can test the Helium permeability of airship gas bags

Paper and Paper Board
Test 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 Films
Test gas permeability of substrates coated paint films

Glass Fiber Cloth and Paper
Including glass fiber cloth and paper materials, e.g. Teflon paint cloth, Teflon welding cloth and Teflon silicon rubber cloth

Soft Tube Materials for Cosmetics
Including various types of cosmetic tubes, aluminum-plastic tubes and toothpaste tubes

Rubber Sheeting
Including various sorts of rubber sheeting, e.g. car tires

Technical Specifications

Specification Film Test
Test Range 0.1 ~ 100,000 cm3/m2·24h·0.1MPa(Standard)
At least 600,000 cm3/m2·24h·0.1MPa(Extended)
Number of Specimen 1pc
Vacuum Resolution 0.05 Pa
Vacuum Degree of Test Chamber <20 Pa
Temperature Range Ambient ~ 40°C(Optional)
Temperature Accuracy ±0.5°C
RH Range 0%RH, 2%RH ~ 98.5%RH, 100%RH (Optional)
RH Resolution ±2%RH
Sample Size Φ113 mm
Test Area 33.18 cm2
Test Gas O2, N2, CO2 etc (out of supply scope)
Test Pressure 0.4 MPa ~ 0.6 MPa
Port Size Ф6 mmPU tubing
Instrument Dimension 400 mm (L) × 475 mm (W) × 450 mm (H)
Power Supply AC 220V 50Hz
Net Weight 75 kg


Standard Configurations: Instrument, Professional Software, Round Sample Cutter, Vacuum Grease, Fast Quantitative Filter Paper and Vacuum Pump

Optional Parts: Blades for Sample Cutter, Vacuum Grease, Vacuum Pump Oil, Fast Quantitative Filter Paper, Humidity Generator, Constant Temperature Control Device

Note: 1. The gas supply port of the instrument is Φ6 mm PU Tubing;
2. Customers will need to prepare for gas supply and distilled water.

Please Note: Jinan Saicheng is always dedicated to the innovation and improvement of product performance and function. Therefore, technical specifications are subject to change without further notice. Jinan Saicheng reserves the rights of final interpretation and revision.
Customer Rating
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Jinan Saicheng Instrument, focusing on the R&D of packaging material testing instruments, provides you with cost-effective quality control solutions. We accept customization products for customer special need.
GPT-201B Gas Permeability Tester
GPT-201B Gas Permeability Tester
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