N95 respirator is a special medical respirator that covers particulate filters that meet the standards of the National Institute of Occupational Health and Safety (NIOSH) of the US government for classification of air purifying respirators. When used correctly, this type of respirator is capable of filtering at least 95% of the airborne dust particles and bacteria.
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In industry: The N95 respirator was originally designed for industrial use especially in fields such as mining, construction and painting.
In healthcare: Approved by NIOSH as a respirator and recognized by the Food and Drug Administration as a medical device similar to a surgical mask, providing barrier protection against drops because of its outstanding antibacterial properties.
Comparison of standards for quality assessment and bacteriostatic ability
United States NIOSH-42CFR84
Europe EN 149-2001
Ability to filter bacteria
Ít nhất 95%
Ít nhất 94%
Mask N95 really effective prevention and fight against the flu?
A small online study found the flu virus to be 0.17 microns in size. This is the level of the size that is less than the filter level of the mask / N100 mask that can filter out. However, it is important to understand that influenza viruses do not float on their own. Flu viruses are passed from one patient to another through saliva (from sneezing and coughing). These particles are usually> = 5 microns in size.
Therefore, when a patient wears a flu mask, an N95 respirator can be very effective at preventing infectious material from leaving the patient’s body and when worn by healthy people, it will prevent it from leaving the patient’s body. inhaling the saliva of the person with the above flu.
More importantly, wearing a mask is a great way to prevent users from rubbing or touching their mouth or nose, which is a very high-risk factor.
How to wear an N95 respirator correctly?
Always read and follow the manufacturer’s instructions when using N95 respirator. It should cover both your nose and mouth to keep you from mold and dirt. If it doesn’t fit, it won’t work properly. The correct fit of the mask requires contact with smooth skin. It will not work properly for people with beard or facial hair.
Detailed instructions on how to wear a standard N95 mask guide doctors at Cho Ray HCM hospital
Wear an N95 mask in accordance with Cho Ray’s doctor’s instructions
Hold the mask in the correct hand
Place the mask on hand with the nose at the fingertips, the palm of the hand that catches the mask and the strap drop down below the palm of the hand (see picture above).
Put the mask on your nose and chin. Place the N95 mask over the chin to the nose, pointed the point towards the nose.
Fasten the strap to fix the mask behind the head. The left hand holds the mask fixed to ensure the nose is closed to the chin, the dominant hand is put the strap behind the head. Stick 2 wires over the head, 1 pull down the charge below the neck, 1 wire is above the oil.
Fix the mask to cover the nose. After the mask is firmly fixed, use your hand to stroke the nose slit to ensure that the splint of the N95 mask is close to the nose to avoid the opening to allow bacteria to attack the respiratory system (nose, mouth).
Check the page before using. Use both hands to carefully examine the chin to the nose. Use 2 hands to seal from top to bottom to make sure the mask is pressed tightly against each person’s face. Even beard growth in one day has been shown to let in air. Always use both straps on the mask to keep it in place to keep air leaking around it.