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Oxygen Transmission Rate
Oxygen Transmission Rate (OTR)
The Oxygen Transmission Rate (OTR) technique is a widely used method for measuring the rate at which oxygen gas permeates through a material, typically packaging films or sheets. This technique is crucial in industries where oxygen exposure can lead to product degradation or spoilage, such as food, pharmaceuticals, and cosmetics.
The working principle of the OTR technique involves sealing the sample material between two chambers, one containing oxygen and the other initially devoid of oxygen. A coulometric sensor is used to measure the amount of oxygen that passes through the sample material from the oxygen-rich chamber to the oxygen-depleted chamber over a specific time period. The rate at which oxygen permeates through the material is then calculated and expressed as the Oxygen Transmission Rate (OTR), typically in units of cm³/(m² × day).
- Evaluation of aerospace composites and coatings for oxygen permeability
- Testing of aircraft cabin materials for oxygen ingress
- Testing of automotive interior materials for oxygen transmission
- Evaluation of fuel tank liners and coatings for oxygen barrier properties
- Testing of chemical containers and packaging materials for oxygen ingress
- Evaluation of chemical storage tanks and liners for oxygen permeability
- Testing of electronic device packaging materials for oxygen transmission
- Evaluation of display panel enclosures for oxygen ingress
- Testing of protective coatings and materials for oxygen permeability
- Evaluation of munition packaging materials for oxygen barrier properties
- Testing of fuel cell membranes and coatings for oxygen transmission
- Evaluation of battery packaging materials for oxygen ingress
- Forensic analysis of packaging materials for oxygen transmission rates
- Evaluation of evidence packaging materials for oxygen barrier properties
- Testing of LED packaging materials for oxygen transmission
- Evaluation of light fixture coatings for oxygen barrier properties
- Testing of medical device packaging materials for oxygen ingress
- Evaluation of implantable device coatings for oxygen permeability
- Testing of pharmaceutical packaging materials for oxygen transmission
- Evaluation of drug delivery systems for oxygen barrier properties
- Testing of raw material packaging films and sheets for oxygen transmission
- Evaluation of raw material storage containers for oxygen ingress
- Testing of semiconductor packaging materials for oxygen transmission
- Evaluation of clean room coatings and materials for oxygen barrier properties
- Testing of data storage device packaging materials for oxygen ingress
- Evaluation of telecommunication equipment coatings for oxygen permeability
- High sensitivity: The coulometric sensor used in OTR testing is highly sensitive, allowing for accurate measurement of even low levels of oxygen transmission.
- Versatility: The technique can be applied to a wide range of materials, including flexible films, rigid plastics, coatings, and laminates.
- Standardized testing: Well-established testing standards, such as ASTM D3985 and ASTM F1927, ensure consistent and reliable results across different testing facilities.
- Shelf-life prediction: The OTR data obtained can be used to predict the shelf-life of oxygen-sensitive products, enabling better product design and packaging selection.
Minimum sample size of 12 cm x 12 cm is recommended.