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Labthink Instruments Co., Ltd.
Gas Permeability Analyzer

Gas Permeability Analyzer

Product catalog summary

Overview
The VAC-V2 Gas Permeability Analyzer by Labthink is designed to measure the permeability of gases through various packaging materials, which is crucial for extending the shelf life of packaged food. It evaluates gas permeability, solubility coefficient, diffusion coefficient, and permeability coefficient for materials such as plastic films, composite films, high barrier materials, sheeting, and aluminum foils.

Testing Procedure
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 that allows gas to permeate through the specimen. The permeability and barrier properties are determined by monitoring pressure changes in the lower chamber.

Professional Technology Features

Capability to test three distinct specimens individually with independent results.
Wide range and high precision temperature and humidity control.
Suitable for testing poisonous, inflammable, and explosive gases.
Automated test process controlled by a computer.
Reference film for fast calibration ensuring accurate data.
Standard RS232 port for data transfer.

Technical Specifications

Test Range: 0.05~50,000 cm³/m²·24h·0.1MPa (standard volume), up to 500,000 cm³/m²·24h·0.1MPa (extended volume).
Number of Specimens: 3 with independent results.
Vacuum Resolution: 0.1 Pa.
Vacuum Degree: <20 Pa.
Temperature Range: 5°C ~ 95°C with ±0.1°C accuracy.
Humidity Range: 0%RH to 100%RH with ±1%RH accuracy.
Specimen Size: Φ97 mm.
Test Area: 38.48 cm².
Test Gases: O₂, N₂, CO₂ (not supplied).
Test Pressure: -0.1MPa ~ +0.1MPa.
Net Weight: 88kg.

Standards Compliance

ISO 15105-1: Plastics - Film and sheeting - Determination of gas-transmission rate - Differential-pressure method.
ISO 2556: Determination of the gas transmission rate of films and thin sheets under atmospheric pressure - Manometric method.
ASTM D1434: Standard Test Method for Determining Gas Permeability Characteristics of Plastic Film and Sheeting.

Catalog excerpts

www.labthink.cn/en Contact: (Ms) Yarina Gao Email: [email protected] Tel: 86-531-85060139 VAC-V2 Gas Permeability Analyzer The permeability of gas through a material is a critical factor when it concerns the ability of a package to prolong the lifetime of packaged food. Labthink VAC-V2 Gas Permeability Analyzer is not only applicable in gas permeability through the packaging but also solubility coefficient, diffusion coefficient and permeability coefficient of plastic films, composite films, high barrier materials, sheeting, and aluminum foils. 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.

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www.labthink.cn/en Contact: (Ms) Yarina Gao Email: trade5(5)labthink.cn Tel: 86-531-85060139 Professional Technology • 3 distinct or equivalent specimens could be tested individually with independent test results at one • Wide range and high precision temperature and humidity control to meet various test conditions • Could be used to test poisonous, inflammable, and explosive gases • Controlled by a 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 Technical Specifications

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www.labthink.cn/en Contact: (Ms) Yarina Gao Email: [email protected] Tel: 86-531-85060139 Accuracy ±1%RH Specimen Size Φ97 mm Test Area 38.48 cm2 Test Gas O2, N2 and CO2 (not in supply scope) Test Pressure -0.1MPa ~ +0.1MPa Net Weight 88kg Standards ISO 15105-1 -- Plastics - Film and sheeting - Determination of gas-transmission rate-Part 1: Differential-pressure method ISO 2556 -- Determination of the gas transmissioni rate of films and thin sheets under atmospheric pressure - Manometric method ASTM D1434 -- Standard Test Method for Determining Gas Permeability Characteristics of Plastic Film...

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