It handles better than a mask, but is much more expensive.
Disposable respirators help GOST 12.4.294‑2015 (EN 149:2001+A1:2009) standards System of labor safety (occupational safety). Means of individual protection of respiratory organs. Filtering half masks to protect against aerosols. General specifications (second edition, corrected) to protect the respiratory system from fine particles and aerosols. They cover nose, mouth and chin, completely or partially consist of filter material and, unlike medical masks, more tightly close to the face.
Can a disposable respirator to protect against coronavirus
According to the study Coronaviruses: An Overview of Their Replication and Pathogenesis , the diameter of the viral particles of coronavirus is around 125 nm or 0.125 microns.
Depending on the class of respirators can protect from inhalation of elements of different diameter. The most effective is able to capture particles less than 2 microns and can become a barrier to the penetration of viruses. Respirators lower class to protect against particles with a diameter of 2-5 µm and can be a barrier to infected dust or droplets of water and biological fluids.
It should be noted that who and the Centers for control and prevention of diseases of the United States (Centers for Disease Control and Prevention, CDC) do not advise Frequently Asked Questions about Personal Protective Equipment to wear respirators in the home even when in contact with patients. The only exception to the who Guidance for health workers to physicians, and during procedures involving coughing or sneezing patient.
However, if the recommendations you don’t care about and you’ve decided to protect the respiratory system with a respirator, for maximum protection it is important to choose the right class.
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What are disposable respirators
On the European classification used GOST 12.4.294‑2015 (EN 149:2001+A1:2009) standards System of labor safety (occupational safety). Means of individual protection of respiratory organs. Filtering half masks to protect against aerosols. General specifications (Reprint with Correction) in Russia, respirators are divided into three classes of protection: FFP1, FFP2 and FFP3. Tell about each of them.
1. Respirators with protection FFP1
Remedies of the first class hold 80% of the pollution from the air, and protect from particles larger than 5 microns Respiratory Protection. Although the mask can pass the virus itself, it filters out a large part of infected dust particles and small droplets of water.
The cost of these respirators in the range of 150-500 rubles apiece.
What to buy
Respirator with valve FFP1, 469 rubles →
Half mask respirator with FFP1 filter, 489 rubles →
Set of 10 dust masks FFP1 with exhalation valve, 3 490 rubles →
2. A respirator with a protection level FFP2
The second class of protection more effective. These funds filter up to 94% of dirt, though can still pass the virus, since delayed Respiratory Protection particle diameter of 2 to 5 microns. The who recommends that the Guidance for health workers to doctors to wear such respirators when performing procedures with patients with coronavirus.
The cost of the half-second class — circa 450-600 rubles apiece.
What to buy
Protective half mask with exhalation valve FFP2, 439 rubles →
Set of 20 respirators FFP2, 9 900 rubles →
3. A respirator with a protection level FFP3
Such a filtering half-mask delay up to 99% of impurities and do not allow viruses, bacteria, and mold spores — they are effective Respiratory Protection against particles less than 2 microns. This is the best option for protection from disposable half masks. However, it should be noted that some of these respirators protect only the respiratory system and do not close the eyes, so the risk of infection still remains.
The cost is about 500-600 rubles apiece. We failed to find such masks in the market. Perhaps they will be in construction shops of your city.
4. N95 Respirator
This respirators of classification of the United States. Such masks are recommended to wear doctors, as an alternative FFP2 in procedures with patients. Filtering — up to 95% of particles 0.3 microns N95 Respirators and Surgical Masks (Face Masks) , that is, the defense is as good as the funds of the second class.
Although one study vs N95 Respirators Medical Masks for Preventing Influenza Among Health Care Personnel showed that little more than N95 masks. Among health care workers, putting on such respirators during the experiment was ill with the flu and other ailments of the respiratory tract is only 9% less people than in the group of those who wore masks.
The cost of the N95 is about 120-200 rubles per share. These respirators are sold by sets of 10 pieces.
What to buy
Set of 10 N95 masks with filter, 2 138 rubles →
Set of 10 N95 masks without filter, 2 269 rubles →
Set of 10 protective white masks N95, 652 ruble →
What you should consider when buying disposable respirator
The presence of valve
Left — respirator without valve, right with valve. Photo: Ozon
The warmth and moisture of the breath causes the respirator to lose its protective properties. Valves of inhalation and exhalation can help to reduce the wetting of the half mask and prolong its service life.
If respirators without valve will effectively protect you for about two hours, the option of this item will last for 6-8 hours. But then you still have to throw it away and wear a new one.
Even if the valves breath a respirator can be difficult. So if you have N95 Respirators and Surgical Masks (Face Masks) chronic respiratory diseases, heart problems and blood vessels, or other conditions that can cause breathing problems, prior to wearing of respirator will ask the therapist whether you to do it.
The presence of vegetation on the face
Respirator is not suitable for people with beard and moustache: the hair do not give the remedy to fit snugly to the skin, and it reduces the efficiency. So, if you are going to shave your fine beard, do not waste your money on half masks.
How to wear a disposable respirator
You must correctly put on and take off product, that it might really protect you from getting the virus.
How to wear a respirator
1. Wash hands with soap and water.
2. Smooth the mask, apply it to the face with one hand.
3. Tuck the elastic behind the ears or put them on the back of the head and neck. In the latter case watch out that they don’t intersect between themselves.
4. Shrink nasal plate on the upper edge of the respirator to conform to the nose, repeating the shape of your nose.
5. Make sure the mask covers the nose and chin.
How to check how well a respirator protects
Close the hand valve half-mask or — if not — its surface in the region of the nose. Take a few sharp breaths. If you can feel air in any place of contact half mask face respirator is not sitting tightly.
Try to spread the gum on the head or more press a nose plate to nose. Also worth correcting a mask if during wear you can feel air from under it on the upper part of the face or eyes.
How much to use and how to remove respirator
As we have mentioned earlier, disposable respirators, no safety valves are losing their properties after 2 hours of use. Models with safety valve will last up to 8 hours, but it is desirable to remove them before 4-6 hours.
Take the respirator for the clip and remove the head. Do not touch the front of the building — it may be contaminated with bacteria.
How to dispose of the respirator
Throw the tool in a closed bin or wrap it in a plastic bag, and then send to a place for disposal. Then wash hands with soap and water.
And don’t forget a respirator in any case will not save you from virus if you don’t follow the main rule: self-isolation, hand washing, disinfection of household items.
But what protection do you use? Share in the comments!