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VAC-VBS

Product catalog summary

Overview: The VAC-VBS is a gas permeability tester based on the differential pressure method, designed for measuring the gas transmission rate (GTR) of films, sheeting, high barrier materials, and aluminum foils.

Professional Technology:

Capable of testing GTRs for various gases across different films.
Simultaneously tests three specimens and provides average results.
Optional temperature control device for diverse testing conditions.
Features two test modes: proportional and standard.
Automated test process controlled by computer.
Includes reference film for quick calibration.
RS232 port for data transfer and supports Lystem™ Lab Data Sharing System.

Test Principle: The specimen is placed in a gas diffusion cell, creating a sealed barrier between two chambers. The lower-pressure chamber is evacuated, followed by the entire cell. Gas is introduced into the higher-pressure chamber, creating a pressure difference. Gas permeates through the specimen, and permeability is determined by monitoring pressure changes in the lower chamber.

Standards: Conforms to ISO 15105-1, ISO 2556, GB/T 1038-2000, ASTM D1434, JIS K7126-1, YBB 00082003.

Applications:

Basic Applications: Films, sheeting, including plastic, composite, and aluminum materials.
Extended Applications: Various gases, including inflammable and explosive gases, biodegradable films, aerospace materials, paper, paint films, glass fiber cloth, cosmetic tubes, and rubber sheeting.

Technical Specifications:

Test Range: 0.1 ~ 100,000 cm³/m²·24h·0.1MPa.
Number of Specimens: 3.
Vacuum Resolution: 0.1 Pa.
Test Temperature: 15°C ~ 55°C.
Accuracy: ±0.1°C.
Specimen Size: Φ80 mm.
Test Area: 28.27 cm².
Test Gas: O2, N2, and CO2.
Test Pressure: -0.1 MPa ~ +0.1 MPa.
Gas Supply Pressure: 0.4 MPa ~ 0.6 MPa.
Instrument Dimension: 670 mm x 490 mm x 350 mm.
Power Supply: 220VAC 50Hz / 120VAC 60Hz.
Net Weight: 57 kg.

Configurations:

Standard: Instrument, software, sample cutter, vacuum grease, filter paper, vacuum pump.
Optional: Temperature control device, blades, vacuum grease, filter paper.

Note: Specifications are subject to change. Visit www.labthink.com for updates. Labthink reserves rights for interpretation and revision.

Catalog excerpts

PERME® VAC-VBS Gas Permeability Tester VAC-VBS is based on the differential pressure method, and is professionally applicable to the determination of gas transmission rate of films, sheeting, high barrier materials and aluminum foils. Professional Technology • The GTRs of various films for distinct gases are testable • Tests 3 equivalent specimens at one operation and exports test results in average value • Equipped with temperature control device(optional parts) to meet various test conditions • The instrument comes with two test modes: proportional mode and standard mode • The system is controlled by computer and test process is automatic • Reference film for fast calibration to ensure accurate and universal test data • Equipped with RS232 port for convenient data transfer • Supports Lystem™ Lab Data Sharing System for uniform management of test results and test reports 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. This test instrument conforms to the following standards: ISO 15105-1, ISO 2556, GB/T 1038-2000, ASTM D1434, JIS K7126-1, YBB 00082003 This test instrument is applicable to the determination of gas permeability of: 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 Test the permeability of various types of gases, e.g. O2, CO2, N2, Air Various Gases and He Extended Inflammable, . . Test the permeability of inflammable and explosive gases Applications Explosive Gases Test gas permeability of various sorts of biodegradable films, e.g. Biodegradable Films _starch-based biodegradable bags_ Labthink Instruments Co., Ltd. 144 Wuyingshan Road, Jinan, P.R.China (250031) Phone: +86-531-85068566 FAX: +86-531-85062108 Labthink International, Inc. 200 River's Edge Drive, Medford, MA, 02155, U.S.A. Phone: +1-617-830-2190 FAX: +1-781-219-3638 www.labthink.com

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Materials for Aerospace Usage Paper and Paper Board Paint Films Glass Fiber Cloth and Paper Soft Tube Materials for Cosmetics Rubber Sheeting Labthink This instrument can test the Helium permeability of airship gas bags 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_ Test gas permeability of substrates coated paint films_ Including glass fiber cloth and paper materials, e.g. Teflon paint cloth, Teflon welding cloth and Teflon silicon rubber cloth_...

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Labthink Instruments Co., Ltd. 144 Wuyingshan Road, Jinan, P.R.China (250031) Phone: +86-531-85068566 FAX: +86-531-85062108 Labthink International, Inc. 200 River's Edge Drive, Medford, MA, 02155, U.S.A. Phone: +1-617-830-2190 FAX: +1-781-219-3638 www.labthink.com

Open the catalog to page 3

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