Introduction
The three-channel filter efficiency test bench can be used to filtration efficiency and resistance testing for non-woven filter material, glass fiber filter material, the new filter material.
Standards
(1) 42CFR84-2005 US new standard for respiratory protection
(2) EN149: 2001 Respiratory protective devices – Filtering half mask to protect against particle - Requirements, inspection and marking
(3) GB19083-2003 Technical requirements for protective face mask for medical use
(4) GB/T2626-2006 Respiratory protective equipment non-powered air-purifying particle respirator
(5) EN1822 High efficiency air filters (EPA, HEPA and ULPA) Part2: Aerosol production, measuring equipment, particle counting statistics
(6) IEST-RP-CC021.1 Testing HEPA and ULPA Filter Media
Composition
· Filter part
· Spray part
· Flow sharing section
· Filter installation part
· Detection, control and data processing output section
· Fan power part
Function
· Efficiency testing
· Resistance testing
Technical Parameters
· Filter test area: 100cm2
· Test flow: 32L / min, 85L / min, 95L / min (optional)
· Efficiency detection range: 85% -99.999%
· Resistance detection range: 0-1250Pa
· Test particle size: PSL (0.3μm) quasi mono-disperse
· DEHS (0.3um-0.5um concentration 70%) (optional)
· Aerosol cross section distribution uniformity: ≤ 10%
· Upstream dilution: 1: 7-10
