1. How to distinguish the front and back of a mask
The method of distinguishing the front and back of the mask is through the metal strip. Usually the color of the medical mask is the same, which makes it difficult for people to distinguish. Generally, the metal strip is on the top and the side protruding to the outside is the outside, and the opposite side is the opposite. On the inside, it can also be distinguished by creases. The side with the crease upward is the inside, and vice versa.
2. Is the mask white inward or blue inward
The correct way to wear a mask is the blue one on the outside. Generally speaking, masks of different colors have the colored side on the outside, such as the blue, pink, and purple side facing outwards, and the white side facing inward, which is close to our face. Not only that, but the mask is also divided into upper and lower parts. The side with a metal strip inside that is hard to touch is the upper end, which is close to the bridge of the nose when worn. Generally blue medical masks are composed of a mask face and a tension band. The face of the mask is divided into three layers: inner, middle and outer. The inner layer is made of skin-friendly material, the middle layer is the isolation filter layer, and the outer layer is a special material antibacterial layer. This high-efficiency medical mask has strong hydrophobic and air permeability, and has a significant filtering effect on microscopic virus-carrying aerosols or harmful dust, but cannot effectively filter PM10 and PM2.5. The overall filtering effect is good, and the materials used are non-toxic, harmless and comfortable to wear.
3. The correct way to wear a mask
Wash your hands, keep your hands clean and hygienic, pick up the mask, place the mask horizontally on your face, mouth and nose, and hang the ropes at both ends of the mask on your ears. The metal strip inside the mask should be on the upper nose bridge. Pull the folds of the mask up and down with both hands at the same time, and press the metal strips on both sides of the nose bridge above the mask with the middle fingers of both hands to ensure that the mask can completely cover the mouth, nose and chin.