The Differential Pressure Method Gas Permeability Tester is a precision laboratory instrument designed to measure the gas permeability of various materials under controlled differential pressure conditions. You can use it to evaluate O₂, CO₂, N₂, and air transmission rates through films, sheets, high-barrier materials, metal foils, and rubber. This instrument provides reliable data for material selection, quality control, and product development in packaging, engineering plastics, aerospace, and chemical industries.

Applications

Gas Transmission Rate Tester adopt Pressure differential method,used to test the gas (o2,N2,CO2 etc)transmission rate (GTR) of packaging materials, such as plastic film, composite film, coextrusion film, aluminum-plated film, aluminum foil, infusion bag, sheets, paper, paper board, solar battery panel, cellophane, ceramics and porcelain, and various containers such as bag,pouch, bottle,can, bowl, box,widely used in the industries of food,pharmaceuticals,personal care,household,electronics and so on.

Standards

YBB 00082003 Determination of Gas Permeability of Pharmaceutical Packaging Materials

GB/T 1038.1-2022 Plastics - Films and Sheets - Test Methods for Gas Permeability - Part 1: Differential Pressure Method

ASTM D1434 Standard Test Method for Determining Gas Permeability of Plastic Films and Sheets

ISO 2556 Plastics - Determination of gas transmission rate of films and sheets at atmospheric pressure - Pneumatic method

ISO 15105-1 Plastics - Films and sheets - Determination of gas transmission rate - Part 1: Differential pressure method

JIS K7126-A Test method for gas transmission rate of plastic films and sheets by differential pressure method

Features

1.Features standard membrane calibration and external sensor calibration functions

2.Real-time monitoring of test status with full-process data logging ensures complete reproducibility of all test data curves, facilitating post-test evaluation of the testing process

3.Features an open database system for streamlined data analysis

4.Simultaneously measures gas transmission rate, solubility coefficient, and diffusion coefficient of test specimens

5.Three fully independent test chambers enable concurrent testing of three identical or different specimens

6.Wide-range, high-precision temperature and humidity control accommodates diverse testing conditions

7.Offers dual test process evaluation modes: proportional and fuzzy logic

8.Test range can be extended as needed to accommodate high permeability testing requirements

9.Enables data fitting at any temperature, facilitating acquisition of test results under extreme conditions

10.Supports testing of toxic, flammable, and explosive gases (requires modification)

11.Computer-controlled system automates the entire testing process

12.Provides standard membranes for rapid calibration, ensuring accuracy and universality of detection data

13.Equipped with RS232 universal data interface for convenient data transfer

Parameters