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Medical Mask Differential Pressure Tester or medical face mask breathability tester, is a lab testing instrument for determination breathability of medica face masks, the test principle is, through measuring the differential pressure required to draw air through a measured surface area at a constant air flow rate, to test the air exchange pressure of the medical face mask material, which indicates the breathability of medical face masks.
Built-in water-filled differential manometer is used to measure the differential pressure, a mass flow meter is used for measurement of the airflow. An electric vacuum pump draws air through the medical mask breathability tester and a needle valve is used to adjust the airflow rate.
Medical face masks differential tester complies with standards like EN 149, EN 14683, ASTM F2100, MIL-M-36954C, GB 19083, GB 2626, YY/T 0969-2013.
Test time: Adjustable
Air source: Air compressor
Test airflow: (8 ± 0.2) L / min
Power: AC 220 V 50 Hz 1 Kw
Manometer range: 0 ～ 500 Pa
Sealing type: O-shaped ring seal
The internal diameter of the top holder and the bottom holder in the contact area with specimen: Φ25 mm
EN 149, EN 14683, ASTM F2100, MIL-M-36954C,GB 19083, GB 2626, YY/T 0969-2013
