Standard:
GB 2626-2019 Respiratory protection Self-priming filter anti-particulate respirator 6.7 Exhaust valve air tightness
GB 2626-2019 Respiratory protection Self-priming filter anti-particulate respirator 6.14 Air tightness
Application:
used to test the air tightness performance of self-priming filter type anti-particulate respirator and full-face mask.