The F 2096-11 (2019) standard test method is used to detect overall leakage in Encasement by internal pressurization (bubble test). This method is suitable for large Encasement or long Encasement, especially in laboratory environments without general purpose testing equipment. The test Sensitivity can reach 250 μm, which can effectively detect the substrate pores and channels and ensure the integrity of the Encasement. The test process has Destructiveness because of the need to enter the Encasement to apply internal air pressure. This method is essential for the integrity assessment of heat-sealed Encasement and helps to ensure that the product environment is free of contamination or sterility. The values specified in the standard are in SI units. The values in parentheses are for reference only.