There are tons of different protective face masks available so it can be a bit confusing as to which ones will give you the best protection. Here is a simple guide to the face masks among disposable face masks, KN95 facemasks and N95 respirators available in the current market.
|Medical Mask||YY/T 0969-2013||YY 0469-2011||GB 19083-2010||GB 2626-2006|
|Name||One-time-use medical face mask||Surgical Mask||Protective face mask for medical use (KN95/N95)||Protective face mask for medical use (KN95/N95)|
|Application||Suitable for covering the mouth, nose and jaw of the user, and is a disposable mask for wearing in ordinary medical environment, and blocking the pollutants exhaled or sprayed out of the mouth and nose.||Disposable masks suitable for use by clinical medical personnel during invasive procedures. It is used to cover the user’s mouth, nose, and jaw, and provides a physical barrier to prevent direct penetration of pathogenic microorganisms, body fluids, particulate matter, etc.||Self-priming filtering medical protective mask suitable for filtering particulates in air, blocking droplets, blood, body fluids, secretions, etc. in medical working environments…||Self-priming filtering medical protective mask suitable for filtering particulates in air|
|Subjects for testing the filtering efficiency||Bacterial aerosol
|Bacterial filtering efficiency (BFE)||≥ 95%||≥ 95%||Not available||Not available|
|Particles filtering efficiency (PFE)||Not available||≥ 30%
|Level 1: ≥ 95%
Level 2: ≥ 99%
Level 3: ≥ 99.97%
|Ventilation resistance||≤ 49 Pa
（Gas flow: 8L/min）
|≤ 49 Pa
（Gas flow: 8L/min）
|≤ 343.2 Pa
（Gas flow: 85L/min）
|≤ 350 Pa
（Gas flow: 85L/min）
|Synthetic blood penetration||Not available||2ml of synthetic blood is sprayed on the outer side of the mask at a pressure of 16.0kpa (120 mmHg). The inner side of the mask should not penetrate.||2ml of synthetic blood is sprayed on the outer side of the mask at a pressure of 10.07kpa (80 mmHg). The inner side of the mask should not penetrate.||Not available|
Cloth masks are totally useless for coronavirus. So forget them and don't waste your money on this kind of face mouth masks!
When you buy disposable masks, make sure it is 0969 standard.
N95 Medical Surgical Masks:
With GB19083 standard requirements, The US-based National Institute for Occupational Safety and Health (NIOSH) gives masks the N95 rating for being able to filter out 95% of particulate matter. There are also N99 masks that filter out over 99% of particulate matter, but these are more expensive and can be difficult to find. Surgical masks are designed to be worn by healthcare professionals during surgery and nursing, to help prevent contamination of the surgical field and/or the patient by capturing liquid droplets that are expelled by the wearer.
According to the GB2626 standard requirements, KN** type masks are classified again according to their filtering performance for non-oily particles, and we have become familiar with three types of masks, KN90, KN95, and KN100. The KN95 mask refers to a filtration efficiency of greater than 95% for non-oily particles above 0.075 microns, and the diameter of the new coronavirus pneumonia virus is about 0.1 to 0.12 microns. Therefore, wearing a KN95 mask can effectively prevent the virus.
Medical Surgical Masks:
Qualified masks that meet all the standards of GB2626 have no anti-penetration requirements. The biggest difference between KN type masks and medical surgical masks is here. Medical surgical masks have anti-permeability requirements, and the outermost layer is a waterproof layer. KN type masks conforming to GB2626 are not waterproof. Therefore, care must be taken to avoid droplets and saliva spray from patients, so as to prevent the masks from getting wet and increasing the bacterial permeability!