What is the N95 MASKS?

N95 respirators and surgical masks (face masks) are examples of personal protective equipment that are used to protect the wearer from airborne particles and from liquid contaminating the face

U.S. standards (N95 and others)

In the United States, the National Institute for Occupational Safety and Health defines the following categories of particulate filters according to their NIOSH air filtration rating as of 2011:[4]

Oil resistanceRatingDescription
Not oil resistantN95Filters at least 95% of airborne particles
N99Filters at least 99% of airborne particles
N100Filters at least 99.97% of airborne particles
Oil resistantR95Filters at least 95% of airborne particles
R99Filters at least 99% of airborne particles
R100Filters at least 99.97% of airborne particles
Oil proofP95Filters at least 95% of airborne particles
P99Filters at least 99% of airborne particles
P100Filters at least 99.97% of airborne particles
source:wikipedia

What is the FFP2 MASKS?

An FFP (filtering facepiece) mask (also called respiratory protection mask or simply respirator) is a type of protective mask certified by the European Union that serves to protect against particulates such as dust particles and various viruses in the air.

The EN 149 standard defines three classes of filter efficiency for these masks, namely FFP1, FFP2 and FFP3

FFP2 masks have a minimum of 94% filtration percentage and maximum 8% leakage to the inside

The EN 149 standard defines performance requirements for three classes of particle-filtering half masks: FFP1, FFP2 and FFP3. The protection provided by an FFP2 (or FFP3) mask includes the protection provided by a mask of the lower-numbered classes.

A mask conforming to the standard must have its class written on it, along with the name of the standard and its year of publication, as well as any applicable option codes, e.g. “EN 149:2001 FFP1 NR D”. Some manufacturers use in addition the colour of the elastic band to identify the mask class, however the EN 149 standard does not specify any such colour coding and different manufacturers have used different colour schemes.

ClassFilter penetration limit (at 95 L/min air flow)Inward leakageTypical Elastic Band
FFP1Filters at least 80% of airborne particles<22%Yellow
FFP2Filters at least 94% of airborne particles<8%Blue or White
FFP3Filters at least 99% of airborne particles<2%Red
from:WIKIPEDIA

What is the KN95 MASKS?

KN95 respirators and surgical masks (face masks) are the China Stand GB2626-2006.

KN95 masks are regulated by the Chinese government under regulation GB2626-2006 and are rated to filter 95% of particles. In April of 2020, in order to help expand the availability of general use face masks for the general public and particulate filtering facepiece respirators for healthcare professionals during the COVID-19 pandemic, the FDA issued guidance authorizing the use of KN95 masks as suitable NIOSH alternatives under certain emergency circumstances (Source:FDA https://www.fda.gov/medical-devices/personal-protective-equipment-infection-control/faqs-shortages-surgical-masks-and-gowns and FDA https://www.fda.gov/media/136449/download).

Compare the Stand from Each Country:

  • N95/N99 – United States NIOSH
  • FFP2/FFP3 – Europe CE EN 149:2001+A1:2009
  • KN95 – China GB2626-2006
  • Special 1st – Korea KMOEL – 2017-64
  • P95 – Mexico NOM-116-2009
  • P2/P3 – Australia AS/NZS 1716:2012
  • DS/DL2/DL3 – Japan JMHLW-200

Comparison of FFP2, KN95, and N95 and Other Filtering FacepieceRespirator Classes

DescriptionFiltering facepiece respirators (FFR), which are sometimes called disposable respirators, are subject to 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 an “N95, FFP2, or equivalent” respirator.

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)

• DS (Japan JMHLW-Notification 214, 2018)

As shown in the following summary table, respirators certified as meeting these standards can be expected to function very similarly to one another, based on the performance requirements stated in the standards and confirmed during conformity testing.

One notable comparison point is the 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.

Comparison of FFP2, KN95, and N95 and Other Filtering FacepieceRespirator Classes
source:3M

Based on this comparison, it is reasonable to consider China KN95, AS/NZ P2, Korea 1st Class, and Japan DS FFRs as “equivalent” to US NIOSH N95 and European FFP2 respirators, for filtering non-oil-based particles such as those resulting from wildfires, PM 2.5 air pollution, volcanic eruptions, or bioaerosols (e.g. viruses). However, prior to selecting a respirator, users should consult their local respiratory protection regulations and requirements or check with their local public health authorities for selection guidance

source:3M

Definitions

Filter performance– the filter is evaluated to measure the reduction in concentrations of specific aerosols in air that passes through the filter.

Test agent– the aerosol that is generated during the filter performance test.

Total inward leakage (TIL)– the amount of a specific aerosol that enters the tested respirator facepiece via both filter penetration and faceseal leakage, while a wearer performs a series of exercises in a test chamber.

Inward leakage (IL)– the amount of a specific aerosol that enters the tested respirator facepiece, while a wearer performs a normal breathing for 3 minutes in a test chamber. The test aerosol size (count median diameter) is about 0.5 micro meter.

Pressure drop– the resistance air is subjected to as it moves through a medium, such as a respirator filter.

Are masks effective against the coronavirus diseas

In light of this new evidence, CDC recommends wearing cloth face coverings in public settings where other social distancing measures are difficult to maintain (e.g., grocery stores and pharmacies) especially in areas of significant community-based transmission.

Can I buy KN95 Masks instead the N95 Masks?

The C.D.C. lists KN95 masks as a suitable alternative when N95s are not available.

The F.D.A. said KN95 masks were eligible for authorization if they met certain criteria, including documentation that they were authentic.

But many hospitals have not been willing to order KN95 masks because of uncertainty over whether imports would be allowed into the United States, as well as potential liability if they turned out to be counterfeit. But for some institutions, that may be a worthwhile risk if the alternative is no masks.

Where can I buy the N95/KN95 MASK

We can offer the N95 MASK WITH NIOSH

ALSO THERE ARE KN95 MASK IN OUR STORE

Masklly.com

Source:

Wikipedia

CDC GOV

FDA

3M

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