Description Overview Medical face masks air exchange differential pressure tester is suitable for determining the air exchange differential pressure of medical face masks. It can also be used for the determination of other textile materials. Standards EN 14683-2014 ASTM F2100-2019 YY 0469-2011 YY 0969-2013 Features Equipped with high precision differential pressure sensor, digital display of the differential pressure of both sides of the specimen. Special sample holders to ensure clamp the specimen firmly.