permeation rate मीनिंग इन हिंदी

The slowest permeation rate, therefore, will occur where penetration is most critical : at the primary packaging level.
While helium has documented permeation constants ( thus a calculable permeation rate ) through glasses, ceramics, and synthetic materials, inert gases such as helium will not permeate most bulk metals.
Finally, while the test data will provide information on individual chemicals based on " worst-case scenario " continuous contact testing, most industrial exposures are not continuous and are in fact mixtures of chemical, for which permeation rates are different.