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Labthink Instruments Co., Ltd.
Gas permeability Tester based on differential and equal pressure method

Gas permeability Tester based on differential and equal pressure method

Product catalog summary

Overview: The DM2/330 Differential and Equal Pressure Method Gas Permeability Tester by Labthink Instruments Co., Ltd. is designed for testing the gas permeability of films and packages. It utilizes both differential and equal pressure methods to measure gas transmission rate, solubility coefficient, diffusion coefficient, and permeability coefficient across various materials.

Professional Technology: The instrument combines differential and equal pressure methods in one unit, allowing for distinct testing requirements. It can test three specimens individually, providing six independent results. It features automatic temperature and humidity control, data fitting functions for extreme conditions, and supports testing of hazardous gases with customization. The device is computer-controlled and supports data sharing via the Lystem™ Lab Data Sharing System.

Test Principles: The tester uses two main methods:

Equal Pressure Method: Involves clamping the specimen between chambers with different gases on each side, measuring the oxygen transmission rate through sensor analysis.
Differential Method: Involves creating a vacuum in one chamber and maintaining a constant differential pressure to measure gas permeation.

A double method combines both approaches sequentially.

Standards Compliance: The instrument conforms to multiple international standards including ISO 15105-1, ASTM D3985, and others.

Applications: The tester is applicable to a wide range of materials including films, sheets, packages, and more. It can test the permeability of various gases and is suitable for specialized applications such as testing fuel tanks, battery shells, and biodegradable films.

Technical Specifications:

Equal Pressure Method: Test range from 0.01 to 5000 cm³/m²·d, with a resolution of 0.001 cm³/m²·d.
Differential Pressure Method: Test range from 0.05 to 50000 cm³/m²·24h·0.1 MPa, with a vacuum resolution of 0.1 Pa.
Other Specifications: Temperature range from 5°C to 95°C, pressure of test gas at 0.6 MPa, and instrument size of 1080 mm x 720 mm x 490 mm.

Configurations: The standard configuration includes the main body, temperature controller, professional software, and other essential components. Optional parts are available for specific testing needs.

Catalog excerpts

Gas permeability Tester based on differential and equal pressure method-1

I PERME® DM2/330 Differential and Equal Pressure Method Gas Permeability Tester DM2/330 Differential and Equal Pressure Method Gas Permeability Tester is based on differential and equal pressure method, and is professionally applicable to the gas permeability test of films and packages. It is designed for tests of gas transmission rate, solubility coefficient, diffusion coefficient and permeability coefficient of plastic films, laminated films, high barrier material, sheets, aluminum foils and back-sheets as well as bottles, pouches, jars and boxes made of plastic, rubber, paper, glass, metal and other materials. Professional Technology • Differential pressure method and equal pressure method combined in one unit to meet distinct testing • Gas transmission rate, solubility coefficient and diffusion coefficient could be obtained at one operation • Three distinct or equivalent specimens can be tested individually with six independent test results by two test • Labthink patented design of diffusion chamber porous support plate • This instrument comes with three test modes: proportional, standard and manual modes • Wide range and high-precision of automatic temperature and humidity control to support various combinations of non-standard test conditions • Test results could be easily obtained even at extreme condition by data fitting function, which could fit any • The instrument could be used to test poisonous, inflammable, and explosive gases (customization required) • The instrument is 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 • Support Lystem™ Lab Data Sharing System for uniform management of test results and test reports Test Principle Unique patent design; one tester can perform tests using both differential and equal pressure methods. 1. Equal Pressure Method: Clamp the pre-conditioned specimen between the upper and the lower chambers. High pure oxygen or air flows in one side of the film (upper chamber); while high pure nitrogen flows in the other side of the film (lower chamber). Oxygen molecule passes through the film into the high pure nitrogen of another side (lower chamber), and is taken to the sensor by the flowing nitrogen. By analyzing the concentration of oxygen detected by the sensor, the oxygen transmission rate and other parameters can be obtained. As to packages, nitrogen flows in the container, air or high pure oxygen fills the outside of the container. Clamp the pre-conditioned specimen between the upper chamber and the lower chamber. Evacuate the low-pressure chamber (lower chamber) and then the whole system. When the specified degree of vacuum is Labthink Instruments Co., Ltd. 144 Wuyingshan Road, Jinan, P.R.China (250031) Phone: +86-531-85068566 FAX: +86-531-85812140

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Gas permeability Tester based on differential and equal pressure method-2

reached, shut off the lower test chamber and feed test gas of certain pressure to the high pressure chamber (upper test chamber). Ensure that a constant differential pressure (adjustable) is maintained between the two sides of the specimen. Thus, under the function of pressure gradient, the test gas permeates from the high-pressure side to the low-pressure side. By monitoring the lower pressure chamber, various barrier Clamp the preconditioned specimen between the upper and lower chambers. Equal pressure method test proceeds first; and then, the differential method. This test instrument conforms...

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Gas permeability Tester based on differential and equal pressure method-3

Contact Lens Test oxygen permeability of contact lens Flexible Plastic Infusion Bottles Test oxygen permeability of flexible plastic infusion bottle Red Wine Bottles Test oxygen permeability of red wine bottle Warm Paste Packaging Bags Test oxygen permeability of the packaging bags of warm paste Test the permeability of various types of gases, e.g. 02, C02, N2, Air Various Gases Explosive Gases Test the permeability of various films to inflammable, explosive Aerospace Usage This instrument can test the Helium permeability of airship gas bag Glass Fiber Cloth Including glass fiber cloth and paper...

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Gas permeability Tester based on differential and equal pressure method-4

Test Chamber Test Pressure 3 (Independent results for each specimen) Test Area Temperature Accuracy Port Size 99.999% high purified nitrogen (Not in supply scope) Port Size 1/8 inch copper tubing Instrument Size Power Supply Optional Parts Mainbody, Temperature Controller, Professional Software, Precision Nitrogen Pressure Regulator, Precision Oxygen Pressure Regulator, Sample Cutter, Communication Cable, Vacuum Pump (Inlet), Filter Paper Package Accessory, Accessory for Small Specimen, Blades of Sample Cutter, Vacuum Grease, Vacuum Pump Oil, Filter Paper 1. The gas supply port of the instrument...

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