Gas Permeation

How to select the gas permeation test is of great importance. Which method should be chosen by the producers of packaging and research institutions for the gas permeation test? Here are some suggestions on this point:

First, the instruments should be the methods in accordance with the policies of the country, as well as the industry standard. For example, the current national survey of plastic food packaging, packaging and products instrument, the method prescribed for the gas permeation test of plastic differential pressure method? Therefore, producers of films and higher gas permeation means of pressure differential method. Other tests and scientific research, national standards should be implemented.

Secondly, the market situation should be taken into consideration in the selection of test methods. Differential pressure method and equal pressure method have their own system. Although many institutions groped to merge the two databases do not have any practical conclusion or achievements. So it is better to customers who buy gas permeation instrument that is based on the same test with that of national institutions for the influence of different testing methods on the evaluation of physical goods.

Third, for clients with special needs, you must have a better understanding of the advantages of the differential pressure method and equal pressure method. For example, manufacturers can choose the method of pressure equal package tools and accessories for the trial package to test data more convenient. If there are different types of test gas to be tested, customers must purchase pressure method instrument. The test costs into account, the method of differential pressure is a more economical and practical choice.