SYSTEST Jinan SikeThe isobaric container oxygen permeability meter is a professional equipment used to detect the oxygen permeability of packaging materials and containers. The core principle is to accurately measure the rate of oxygen entering or seeping out of the container while maintaining the same pressure inside and outside the container, in order to evaluate the oxygen barrier performance of the container; Ensure product quality and extend shelf life. Mainly used for detecting the oxygen barrier properties of packaging for nuts, baked goods, canned meat, etc., to prevent food oxidation, spoilage, and spoilage in the food industry. Test the oxygen permeability of drug packaging (such as oral liquid bottles, capsule aluminum-plastic blister packs) in the pharmaceutical industry to avoid degradation and failure of drugs due to oxygen contact. Evaluate the oxygen resistance of skin care products and cosmetics packaging (such as essence liquid bottle) in the daily chemical industry to prevent active ingredientsOxidation deactivation.

Working principle of isobaric container oxygen permeameter:

Adopting Coulomb electric quantity principle and isobaric testing technology. Clamp the pre processed sample between the testing chambers. For the packaging container, high-purity nitrogen flows inside the container, while air or high-purity oxygen surrounds the outside of the container. Oxygen molecules diffuse through the container wall into the high-purity nitrogen gas inside, and are carried by the flowing nitrogen gas to the sensor. By analyzing the oxygen concentration measured by the sensor, parameters such as oxygen permeability can be calculated.

SYSTEST Jinan Sike isobaric container oxygen permeameter main models and characteristics

• OTR-1901 Oxygen Transmittance TesterDesigned and manufactured according to standards such as ASTM D3985, it is suitable for testing the oxygen permeability of packaging containers such as plastic films, high barrier materials, solar panels, sheets, composite materials, aluminum plated films, co extruded films, aluminum foils, sheet materials, as well as bottles, bags, cans, boxes, etc. made of plastic, rubber, paper, glass, metal, and other materials.

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• •OTR-1903 Oxygen Transmittance TesterBased on Coulomb oxygen analysis sensor and isobaric testing principle, provide high-precision and high-efficiency oxygen permeability detection tests for high and medium gas barrier materials. There are multiple testing modes to choose from, including intelligent mode, which can meet various standard and non-standard tests. The operation is simple and the testing is intelligent and convenient.

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The specific process is as follows:

Sample preparation: Place the container to be tested into the testing chamber of the equipment, ensuring a seal between the container and the testing chamber.

Isostatic pressure control: Specific gases are introduced into the interior of the container and the testing chamber (usually nitrogen is introduced into the container and oxygen is introduced into the testing chamber), and the pressure control system is used to maintain the same pressure between the two, avoiding gas "flow" caused by pressure differences and only retaining the permeation of oxygen due to "concentration differences".

Concentration monitoring: The nitrogen inside the container carries oxygen that has permeated in, and the equipment monitors the real-time changes in oxygen concentration inside the container through high-precision sensors such as electrochemical sensors and gas chromatographs.

Data calculation: Based on the oxygen concentration change curve, combined with parameters such as container volume and testing time, the oxygen permeation rate (usually measured in mL/(pkg · d), which is the number of milliliters of oxygen per package per day) is automatically calculated.