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OXYGEN PERMEABILITY TESTING OF HIGH BARRIER MATERIALS

June 5th, 2012 Leave a comment Go to comments

ABSTRACT
The oxygen permeation of packaging materials has been of importance to packaging engineers, food scientists and material engineers for decades. A brief history of oxygen permeation testing methods and a series of products will covered below.   Recent advances in patented flow technology, mass transfer analysis and understanding, high speed predictive computer analysis and low cell volume construction now give engineers and scientists the ability to determine material and flavor interactions, shelf life estimations, and rapid permeability, solubility and diffusion coefficient analysis. This mass transfer analysis allows material producers, converters and end-users the ability to predict the performance of packaging materials by not only using permeability, but also understanding the importance of solubility and diffusion on this performance.

In the case of oxygen,  the most used method is using a coulometric sensor.  The apparatus first developed for this method used a single head test cell; later versions of this equipment included multiple test cells (up to 10). It is operator friendly, required a great deal less maintenance, and allowed the equilibrium curve to be graphically displayed as the test progressed instead of calculating a single value at the end of the test.

Instruments for Testing Oxygen permeability

Labthink PERME OX2/230 Oxygen Transmission Rate Tester

OX2/230 system is based on the coulometric method and adopts Labthink’s latest exclusive patent design of three diffusion cells integrated in one instrument for individual or multiple tests, which improves test efficiency by 3 times.

It can be easily connected with 9 satellite bases together to accomplish up to 30 tests at the same time.
It is also embedded with high precision oxygen sensor, which provides a huge test range of 0.01~65000cm3/m2·d and durable service life.

Labthink PERME OX2/231 Oxygen Permeability Tester

Ox2/231 is also based on coulometric method and can test for plastic films, composite films, sheeting, plastic bottles, plastic bags and other packages.

  • Test 3 equivalent specimens at one operation and export test results in average value
  • 2 test modes for both films and packages, and accessories for package test are available for customization
  • Equipped with constant temperature and humidity control devices (optional parts) to meet different test requirements
  • Reference film for fast calibration to ensure accurate and universal test data

    • Both these instruments conform to multiple international standards: ISO 15105-2, GB/T 19789, ASTM D3985, ASTM F2622, ASTM F1307, ASTM F1927, JIS K7126-B, YBB00082003.

    For more details, please go to http://www.labthinkinternational.com.cn or contract Yarina Gao at trade5@labthink.cn.

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