Gas Permeability Tester

A precision testing instrument used to measure the permeability of gases (such as oxygen, nitrogen, carbon dioxide, etc.) through various materials (e.g., plastic films, composite films, etc.).

Differential pressure method principle High-precision sensors International standards

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Main Applications

The core task of the gas permeability tester is to evaluate the barrier properties of materials, safeguarding product quality and safety.

Evaluating packaging materials

Assessing whether packaging for food, pharmaceuticals, electronic products, etc., can effectively block oxygen, water vapor, and other gases, thereby extending shelf life and protecting the contents.

Guiding material R&D

Assisting material scientists and engineers in screening, improving, or innovating new materials with specific gas barrier performance, driving technological advancement.

Quality control

Conducting spot checks on raw materials and finished products during production to ensure that gas barrier performance meets required standards, guaranteeing product consistency.

Working Principle (Differential Pressure Method)

The vast majority of gas permeability testers operate on the differential pressure method principle to accurately measure gas permeation parameters.

Sample preparation

Place the material specimen to be tested between the upper and lower test chambers, then clamp and seal it tightly to ensure there is no leakage.

Establishing a differential pressure

Evacuate the lower chamber (low‑pressure side) and fill the upper chamber (high‑pressure side) with the test gas, creating a constant pressure difference.

Monitoring permeation

Driven by the pressure difference, the gas permeates slowly from the high‑pressure side through the material to the low‑pressure side.

Calculating parameters

High‑precision sensors continuously monitor the pressure change on the low‑pressure side in real time, from which key parameters such as gas permeability, diffusion coefficient, and permeation coefficient are calculated.

Hot Sale Recommendation

SN-N01E Gas Permeability Tester

Adopting the classic differential pressure method and equipped with high‑precision pressure sensors, this instrument can quickly measure the gas permeability of various films and sheets. Featuring easy operation and accurate data, it is an ideal choice for quality control of packaging materials.

Basic model High cost‑performance Easy to operate Differential pressure method

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Testable Materials and Gases

Wide application range, suitable for barrier property testing of various materials and gas types.

Material Types

Plastic films
Composite films
Aluminized films
High‑barrier materials
Sheets (PP/PVC)
Metal foils
Rubber
Tire inner liners
Battery separators
Breathable films
Paper
Packaging containers

Gas Types

Oxygen (O₂)
Nitrogen (N₂)
Carbon dioxide (CO₂)
Air
Helium (He)
Methane (CH₄)
Hydrogen (H₂)

Application Fields

Widely used in industries that have high requirements for packaging barrier performance.

Food industry

Evaluating whether packaging can prevent food from oxidation, moisture, and deterioration, thereby extending shelf life.

Pharmaceutical industry

Ensuring the barrier properties of drug packaging to guarantee efficacy and safety.

Electronics industry

Protecting precision electronic components from harmful gases and enhancing reliability.

Research & quality inspection

Used in material research and product quality supervision and testing, promoting industry standards.

Flagship Choice

SN-N103E Gas Permeability Tester

Equipped with an advanced temperature control system and a multi‑chamber design, it supports testing of various gases such as oxygen, nitrogen, and carbon dioxide, meeting the high‑standard testing requirements of multiple industries including food, pharmaceuticals, and electronics. The intelligent operation interface and automatic data recording make testing more efficient and accurate.

Triple‑chamber design Fully automatic Multi‑gas testing Intelligent temperature control Automatic data recording

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Key Standards Followed

Comprehensive coverage of domestic and international standards, providing reliable testing references for global customers.

ISO 15105-1 ISO 2556 GB/T 1038-2000 ASTM D1434 JIS K7126-1 YBB 00082003

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