Oxygen Barrier Property Test of Plastic Bottles for Dairy Drinks
Dairy drinks are very common consumer products in people’s daily life. Peanut milk, walnut milk and many other beverage containing milk are very popular. Dairy milk is mainly made of fresh milk, which contains a large amount of protein, vitamin and fat. Those nutrients are liable to be oxidized, which should be kept away from light. The packaging materials used for dairy drinks should have sufficient oxygen barrier property. Otherwise, those nutrients may be oxidized and the dairy drinks may get deteriorated.
In the tests, the pre-conditioned specimen is mounted between the upper and lower chambers at ambient atmospheric pressure. One chamber contains oxygen and the other chamber is slowly purged by a stream of nitrogen. Due to the concentration difference between the two chambers, oxygen molecules permeate through the specimen into the nitrogen side and are taken to the coulometric sensor where proportional electrical signals are generated. The oxygen transmission rate is then obtained by analyzing and calculating the signals. For package samples, high purity nitrogen flows inside the package, and oxygen flows outside.
The tests shall be performed according to the following procedures.
(1) Condition the specimen in a desiccant container at 23℃ for 72 hours.
(2) Remove the specimen from the desiccant container and fix it on a sample support with rapid transparent adhesive. Make sure the specimen is sealed tightly.
(3) Place the specimen with sample support into the testing instrument and cover the specimen with an aluminum foil bag.
(4) Set test temperature, test humidity and other test parameters. Click Start Test to start the tests.
(5) The test results will be calculated and displayed automaticallyafter tests.
For more details about OX2/231 Oxygen Transmission Rate Tester http://en.labthink.com/en-us/product/ox2-231-oxygen-permeability-tester.html, please visit www.labthink.com
About Labthink Instruments Co., Ltd:
Labthink Instruments Co., Ltd is one leading supplier of packaging testing instruments, which is headquartered in Jinan, China and operated in Boston, U.S.A.
Labthink is a multinational technology company that is devoted to helping customers succeed, employees grow and brands gain respect. The headquarters of Labthink is in Jinan, China; its international headquarters is in Boston, USA; and its SAC IT Center is in Hong Kong, China. The company has more than 50 international distributors and more than 30 international service providers.
Labthink International, Inc.
200 River's Edge Drive, Medford, MA, 02155, USA
Phone: (+1) 617-830-2190
FAX: (+1) 781-219-3638
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