Gas Permeability Testing Instrument

Gas Permeability Testing Instrument
The gas permeability tester is like a "packaging detective" that checks how well materials (like plastic bags or food wraps) block gases such as oxygen, carbon dioxide, and nitrogen. Imagine if oxygen seeped into your snack packaging—it could make the food stale or even spoil it. This machine helps manufacturers ensure their packaging acts as a strong shield, keeping products fresh longer and reducing waste. One cool feature? It can test multiple samples at the same time, saving time and making it perfect for busy factories or labs.

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Product Introduction

Test Principle

The differential pressure method gas permeability tester (also known as the pressure gradient principle) to measure the gas transmission rate (GTR) of materials. Here's a detailed breakdown of its core working mechanism:
The material sample is mounted between two chambers: a high-pressure gas chamber (filled with the test gas, e.g., O₂, CO₂, or N₂) and a low-pressure detection chamber. A controlled pressure gradient is applied across the sample, driving gas molecules to permeate through the material. The rate of gas transmission is quantified by monitoring pressure changes in the low-pressure chamber using high-precision sensors.

Product Parameter (Specification)

Item	Parameter
Measuring Range	0.01-50000 cm³/(m²·24h·0.1MPa)
Resolution	0.01 cm³/(m²·24h·0.1MPa)
Temperature Range	15-55 ℃
Temperature Accuracy	±0.5 ℃
Specimen Count	1
Test Area	Approx. 50.26 cm²
Specimen Diameter	113 mm

Product Feature And Application

Multi-Layer film gas barrier tester suitable for food, pharmaceuticals, medical devices, daily chemicals and sustainable packaging industries, the Three-Chamber Gas Permeability Tester evaluates the gas transmission performance of films, sheets, paper, packaging materials, and related barrier substrates. Designed to accommodate high, medium, and low gas barrier materials, it provides versatile, high-efficiency detection for oxygen (O₂), carbon dioxide (CO₂), nitrogen (N₂).

Extended Applications	Contents
Biodegradable Films	Various sorts of biodegradable films
Materials for Aerospace Usage	Airship gas bags material
Paper/ Card Board	Paper-plastic composite materials, paper bowls, disposable paper cups
Paint Films	Substrates coated paint films

Production Details

1.Equilibrium-Based Automation: Real-time permeation analytics detect curve stabilization, initiating automatic shutdown to eliminate over-testing and enhance repeatability.

2.Tri-Chamber Parallel Testing: Three autonomous units with dedicated sensors enable multi-condition or multi-material trials, maximizing operational efficiency.

3.Engineered Pressure Variance: NIST-traceable sensors and PID-controlled thermal systems maintain sub-0.1°C stability during differential pressure-driven GTR quantification.

4.Configurable Chamber Sizing: Expandable/reducible chamber volumes (per client SOPs) accommodate niche applications, from ultrathin coatings to composite laminates.

5.Proprietary Coding Platform: A user-defined test protocol builder integrates ASTM, DIN, and JIS standards, ensuring compliance across multinational supply chains.

Operation Video

Product qualification

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

Deliver,Shipping And Serving

Pre-Order Services

Gain insights through technical briefings, application scenarios, and tailored equipment recommendations. Custom solution engineering, sample validations, and facility audits optimize your selection process.

Sales Process Management

We finalize terms (cost, timelines, payment) with precision, followed by instrument calibration and pre-shipment quality certification. Comprehensive training ensures immediate operational proficiency.

Sustained After-Sales Excellence

In addition to the 12-month warranty, we offer perpetual technical assistance, predictive maintenance schedules, and dedicated support channels to address challenges promptly, ensuring peak instrument performance.

FAQ

Q: Can the tester handle high-barrier and low-barrier materials?

A: Yes, its wide detection range accommodates materials from ultra-high barriers (e.g., metalized films) to highly permeable substrates (e.g., breathable textiles).

Q: What is the maximum sample thickness it can handle?

A: Typically 0.1~2 mm, depending on the model. Thicker materials may require specialized clamps or reduced pressure settings.

Q: Do you offer pre-sale sample testing or demonstrations?

A: Yes. Contact our team to arrange a live demo or submit samples for free preliminary testing and customized reports.

Q: What if test results show inconsistencies?

A: Verify sample integrity and preparation. Check for chamber seal leaks or sensor contamination. Recalibrate using certified reference materials.
If issues persist, our technical team provides remote diagnostics.

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Three Chamber Gas Permeability Tester

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