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Medium Size Multi-function Laptop Bed Tray Desk: Simple life
Hammer test probe*1
Suitable For Gas Exchange Pressure Difference Tester And Ventilation Resistance Tester Safety Goggles * LightweightShips 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