How to choose N95 masks


1. Choose a suitable type of mask

(1) Medical protective masks(5mm nose wrie) should be the first choice for medical workers, and ordinary skim gauze masks should be the first choice for ordinary citizens to use in their daily lives. In special occasions, such as medical treatment and patient visits, ordinary citizens also choose medical masks.

(2) The materials used in the masks should have no peculiar smell and be harmless to the human body, especially the parts of the materials in contact with the human face, which should be non-irritating and allergic.


2. Choose a qualified mask

When choosing a mask, it depends on whether there is a brand name on the package, whether there is information about the manufacturer or supplier, and whether there is a mask certificate or instructions for use. Disposable masks should also have a one-time indication, and for reusable medical protective masks, the sterilization method should also be indicated. Generally speaking, ordinary gauze masks should be marked with ordinary or disinfection grade.


3. Choose a regular manufacturer

To prevent influenza, we mostly choose ordinary degreased gauze masks or medical protective masks, which need to be purchased from legally operated medical stores or from manufacturers with health permits or medical device registration certificates.


4. Check the appearance

This is a problem that is easy to overlook when we choose masks. First of all, we must check whether the packaging of the mask is complete and whether it is damaged. There must be no holes or stains on the surface of the mask. Medical protective masks should not have an exhalation valve. For the close-fitting arched mask, the transverse diameter is not less than 14cm, and the longitudinal diameter is not less than 14cm; the length of the medical protective rectangular mask is not less than 17cm and the width is not less than 17cm; the length of the ordinary non-greased gauze mask is not less than 17cm and the width is not less than 13cm. The number should not be less than 12 layers. Another thing to remind everyone is that if you choose a medical mask, remember that it must be equipped with a nose clip. The nose clip is made of bendable plastic material and the length is not less than 8.5cm.