One Case of 1,000 Masks
KN95 Masks – 5-Layer Fold-Flat Easy-Carry Filtering Hypoallergenic Respirators Masks Pest Control Trade Performance
Our filtering face-piece respirator (FFR), which are sometimes called disposable respirators, satisfies various regulatory standards around the world. These standards specify certain required physical properties and performance characteristics in order for respirators to claim compliance with the particular standard.
During pandemic or emergency situations, health authorities often reference these standards when making respirator recommendations, stating, for example, that certain populations should use a “KN95, N95, FFP2, or similar” respirator.
Comparing N95 (US) to KN95 (CH)
· To be certified as a KN95 mask, the Chinese government requires the manufacturer to run mask fit tests on real humans with ≤ 8% leakage. The N95 mask standard does not require manufacturers to run fit tests. Many hospitals and companies require their workers to be fit-tested. However, those are requirements of companies themselves, not for the US NIOSH certification on the mask.
· N95 masks have slightly stricter requirements for pressure drop while inhaling and exhaling. That means they’re required to be slightly more breathable than KN95 masks.
· Both ratings require masks to be tested for filtration efficiency at capturing salt particles (NaCl). Both are tested at a flow rate of 85 L/minute.
· Since N95 and KN95 masks are rated to capture 95% of 0.3-micron particles.
· N95 vs. KN95: What’s The Same?
Lots of users care most about what percentage of particles the masks capture. On this metric, N95 and KN95 respirator masks are the same. Both masks are rated to capture 95% of tiny particles (0.3-micron particles, to be exact).
· Most of these differences are small and would be uninteresting to the average mask user. However, here are the key differences:
Flow rates specified by these standards for the inhalation and exhalation resistance tests. Inhalation resistance testing flow rates range from 40 to 160L/min. Exhalation resistance testing flow rates range from 30 to 95 L/min. Some countries require testing to be performed at multiple flow rates, others at only the high or low end of those ranges. Although this appears to suggest that the standards’ requirements for breathing resistance (also called “pressure drop”) differ from each other, it’s important to understand that pressure drop across any filter will naturally be higher at higher flow rates and lower at lower flow rates. Given typical pressure curves for respirator filters, the standards’ various pressure drop requirements are actually quite similar. This chart shows a representative filter pressure drop curve. If one filter is tested at a high flow rate, the pressure drop performance will be relatively high. If that same filter is tested at a low flow rate, the pressure drop performance will be relatively low.
· SHIPPED FROM CARSON CALIFORNIA, USA
· Containment Protection
· Pest Control Operation
· Residential/Commercial Maintenance
· Retail and Public Space Cleansing
· Law Enforcement
· Food Workers
· Tattoo Artists
· Salon Workers
· General Maintenance
· Lead & Asbestos Abatement
· Environmental Cleanup
· Food Processing
· Mold Remediation
· Spray Painting
· Crime Scene Investigation
· Machine or Vehicle Maintenance
· Metal Polishing
· Filter Performance (measuring the reduction in concentrations of specific aerosols in air that passes through the filter): ≥ 95%
· Test Agent @ Flow Rate: 85 L/min (the aerosol that is generated during the filter performance test): NaCI
· Inward leakage (IL) (the amount of a specific aerosol that enters the tested respirator face-piece, while a wearer performs normal breathing for 3 minutes in a test chamber. The test aerosol size/count median diameter): 0.5 micrometer/average.
· Total Inward Leakage (the amount of a specific aerosol that enters the tested respirator face-piece via both filter penetration and face-seal leakage, while a wearer performs a series of exercises in a test chamber): ≤ 8% arithmetic mean
· Inhalation Resistance @ Flow Rate: 85 L/min – Max Pressure Drop (the resistance air is subjected to as it moves through a medium, such as a respirator filter): ≤ 350 Pa
· Exhalation Resistance @ Flow Rate: 85 L/min – Max Pressure Drop (the resistance air is subjected to as it moves through a medium, such as a respirator filter): ≤ 250 Pa
· Exhalation Valve Leakage Requirement @ Force Applied of 1180 Pa: De-pressurization to 0 Pa ≥ 20 /sec
· CO2 Clearance Requirement: ≤ 1%
· Compound Standard: GB 2626-2006
· 3S skin non-woven
· Plastic nose strip
According to mask manufacturer 3M, “it is reasonable to consider” China’s KN95s “equivalent” to US N95s. This document is only intended to help clarify some key similarities between such references, specifically to the following FFR performance standards:
· N95 (United States NIOSH-42CFR84)
· FFP2 (Europe EN 149-2001)
· KN95 (China GB2626-2006)
· P2 (Australia/New Zealand AS/NZA 1716:2012)
· Korea 1st class (Korea KMOEL – 2017-64)
· DS2 (Japan JMHLW-Notification 214, 2018)
One Case of 1,000 Masks