Face Masks Particulate Filtration Efficiency PFE Tester GLE-20 is an oil-salt two-in-one Face Masks Particulate Filtration Efficiency PFE Tester. According to ASTM F1862-17, ASTM F2299-03 (2017), ASTM F2100-2019, BS EN14683-2019, BS EN 14387-2004+A1 2008, BS EN 136-1998, BS EN 140-1999, BS EN 143-2000 +C1-A1, BS EN 149-2001+A1, etc. It is used to test the particulate filtering efficiency of daily protective masks and medical masks, and to determine the obstruction performance of ordinary fabrics and medical protective masks against a constant flow of airflow. It is widely used for medical device inspection centers, safety protection inspection centers, labor protection inspection centers, drug inspection centers, disease prevention and control centers, textile testing centers, hospitals, mask manufacturers, etc. Standards: It is designed and manufactured according to YY0469-2004 “Technical Requirements for Medical Surgical Masks” and GB2626-2006 “Respiratory Protective Equipment Self-Suction Filter Anti-Particle Respirator”. At the same time, it also refers to the advanced design concepts of similar international equipment (such as the American TSI company), based on the principle of “ European standard EN1822-3: 1998 single-sheet filter material test ”, but it is suitable for the test status of domestic related industriesGB / T 32610-2016 “Technical Specifications for Daily Protective Masks”GB / T 19082-2009 “Technical requirements for medical disposable protective clothing”GB / T 19083-2010 “Technical Requirements for Medical Protective Masks”GB 24539-2009 General technical requirements for protective clothing and chemical protective clothingYY / T 0969-2013 “Standard for disposable medical masks” Standard Requirement: Using sodium chloride particles to detect KN filter elements, and use dioctyl phthalate or equivalent oil particles (or paraffin oil) to detect KP filter elements. ps: (WLJCDM809) https://www.testerinlab.com/products/Protective_clothing_tester/