3-PLY Disposable Medical Surgical Respirator Mask Anti Virus
A medical surgical mask is a mask worn by medical staff when working. It is mainly used in high-demand medical environments such as medical clinics, laboratories, and operating rooms. It has a relatively high safety factor and strong resistance to bacteria and viruses. Medical surgical masks can also be used to prevent the spread of influenza and respiratory diseases.
Structure of medical surgical mask

Product structure：
non-woven material, including filter layer, mask band and nose clip.
The standard medical surgical mask is divided into 3 layers. The outer layer has a water blocking effect to prevent droplets from entering the mask; the middle layer has a filtering function to block> 90% of 5μm particles; the inner layer near the mouth and nose is used to absorb moisture.

Product Features:
The main technical indicators of medical surgical masks are as follows:
(1) Filtration efficiency: Under the condition of air flow (30 ± 2) L / min, the filtration efficiency of aerodynamic median diameter (0.24 ± 0.06) μm sodium chloride aerosol is not less than 30%;
(2) Bacterial filtration efficiency: Under specified conditions, the filtration efficiency of aerosol of Staphylococcus aureus with an average particle diameter of (3 ± 0.3) μm is not less than 95%;
(3) Breathing resistance: under the condition of filtration efficiency flow, the inhalation resistance does not exceed 49Pa, and the exhalation resistance does not exceed 29.4Pa;
(4) Synthetic blood penetration: After 2ml of synthetic blood is sprayed at the pressure of 16.0kPa (120mmHg) on the outer side of the mask, no penetration should occur on the inner side of the mask
(5) Product size: 17.5 * 9.5cm
(6) Single net weight: around 2g

https://www.unisourcesgroup.com/medical/