VAC-V2 Gas Permeability Tester

VAC-V2 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.

Product Features

  • 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 standard mode
  • 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 condition 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
  • Supports LystemTM Lab Data Sharing System for uniform management of test results and test reports

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

Standards

This test instrument conforms to the following standards:
ISO 15105-1, ISO 2556, GB/T 1038-2000, ASTM D1434, JIS K7126-1, YBB 00082003

Applications

This test instrument is applicable to the determination of gas permeability of:

Basic Applications
  • Films
    Including plastic films, plastic composite films, paper-plastic composite films, coextruded films, aluminized films, aluminum foils, aluminum foil composite films and many others
  • Sheeting
    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

SpecificationsFilm Test
Test Range0.05~50,000 cm3/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
Temperature5°C ~ 95°C
Accuracy±0.1°C (standard)
Humidity0%RH, 2%RH ~ 98.5%RH, 100%RH
(humidity generator is optional)
Accuracy±1%RH
Specimen SizeΦ97 mm
Test Area38.48 cm2
Test GasO2, N2 and CO2 (outside of supply scope)
Test Pressure-0.1 MPa ~ +0.1 MPa
Gas Supply Pressure0.4 MPa ~ 0.6 MPa
Port SizeΦ6 mm PU Tubing
Instrument Dimension760 mm (L) x 575 mm (W) x 450 mm (H)
Power Supply220VAC 50Hz / 120VAC 60Hz
Net Weight88 kg

Configurations

Standard Configurations
Instrument, Constant Temperature Control Device, Professional Software, Round Sample Cutter, Vacuum Grease, Fast Quantitative Filter Paper and Vacuum Pump(Imported)
Optional Parts
Blades for Sample Cutter, Vacuum Grease, Vacuum Pump Oil, Fast Quantitative Filter Paper and Humidity Generator
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.

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