Suitable For Gas Exchange Pressure Difference Tester And Ventilation Resistance Tester Multimeters it can also be used

it can also be used to measure environmental noise

It can accurately measure the amount of carbon dioxide in the air

easy to switch

Fully expand the storage

Test pressure：－0

Suitable For Gas Exchange Pressure Difference Tester And Ventilation Resistance Tester Multimeters it can also be usedShips FREE Handling Day: 1 3 Days, Arriving Day: 15 35 Days[SHORTDESCRIPTION] Introduction: The gas exchange pressure difference tester for medical masks is suitable for measuring the gas exchange pressure difference of surgical masks and other textile materials. Scope of application It is used to measure the pressure difference index of mask under specified conditions Meet the standard YY 0469 2004 Y T 0969 2013 Instrument characteristics 1. Color