These masks are comply with GB2626-2006 requirement and intended to be used for protection against particulate aerosols free of oil; time use restrictions may apply. They are extremely durable and have a soft and comfortable inner surface with adjustable nosepiece and secured headband for a proper fit. There is a low breathing resistance for increased working comfort.
For use against Particulate Aerosols free of oil
Inhalation Resistance Delta P (85LPM + 1LPM): <25mmH2O
Exhalation Resistance Delta P (85LPM + 1LPM): <35mmH2O
Filtration Efficiency (Test Aerosol NaCl 2%): >95% for airbone particles of 0.3micron
Headband Pull Strength: 10N/10s
Exhalation Valve Leakage Test: Negative pressure > 1180Pa/20s
Exhalation Valve Weld Strength: 10N/10s