VAC-V1 Gas Permeability Tester

  • VAC-V1 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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Description

VAC-V1 Gas Permeability Tester

Model: VAC-V1

Brand: Labthink – China

vac-v1

VAC-V1 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.

Features:

 

  • Gas transmission rate, solubility coefficient, diffusion coefficient, and permeability coefficient of the specimen could be obtained at one operation
  • The instrument comes with two test modes: proportional mode and standard mode
  • Test range could be extended based on user requirements to test materials with high permeability
  • High precision temperature control to meet different test conditions
  • 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
  • Fast-access calibration ports for temperature and humidity, and standard RS232 port for convenient calibration and 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 the 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/T1038-2000, 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 and Poisonous 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

 
Specifications Film Test
Test Range 0.1~100,000 cm3/m2·24h·0.1MPa (standard volume)
At least 600,000 cm3/m2·24h·0.1MPa (extended volume)
Number of Specimens 1
Vacuum Resolution 0.1 Pa
Vacuum Degree of Test Chamber <20 Pa
Temperature Room temperature~50°C
Accuracy ±0.1°C
Specimen Size Φ97 mm
Test Area 38.48 cm2 (Φ70 mm)
Test Gas O2, N2 and CO2 (outside of supply scope)
Test Pressure -0.1 MPa~+0.1 MPa (standard)
Gas Supply Pressure 0.4 MPa~0.6 MPa
Port Size Φ6 mm PU Tubing
Instrument Dimension 680 mm (L) x 565 mm (W) x 550 mm (H)
Power Supply AC 220V 50Hz
Net Weight 130 kg

Standard Configurations

Mainframe, 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 and Fast Quantitative Filter Paper

Note

1. The gas supply port of the instrument is Φ6 mm PU tubing;
2. Customers will need to prepare for gas supply.

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