The ASTM F3287-17e1 standard test method is used for nondestructive detection of leaks in Encasements by mass extraction techniques. This method is suitable for a variety of non-porous rigid and semi-rigid Encasements, such as medical, pharmaceutical, or food Encasements. The test detects leaks by measuring the mass Flow rate of Encasements in an enclosed vacuum test chamber and provides quantitative Flow rate data. It detects minute leak defects and is used to compare the sealing performance of different Encasements. This method is highly sensitive and non-Destructiveness and is widely used for Encasement quality control and product Stability assessment.