Due to the influence of novel coronavirus, masks have become a necessity for the whole people, but in the purchase, we are confused. Why are so many models and so many standards. What are the differences between ordinary disposable masks, medical protective masks, medical surgical masks and ordinary medical masks? Which one do you buy? Will the wrong purchase affect your health?

In fact, these are national standards, just like drugs can not be called around, below Musk Medical will introduce the mask standards stipulated by the National Drug Administration of China.

(1) Protective medical masks
Compliance with Technical Requirements of GB19083-2003《 Medical Protective Mask, important technical indicators include non-oil particle filtration efficiency and airflow resistance:

1. filtration efficiency: The filtration efficiency under air flow (85 ± 2) L/min for the aerodynamic median diameter (0.24 ± 0.06) μm sodium chloride aerosol is not less than 95%, i. e. N95 (or FFP2) and above.

2. Inspiration resistance: not exceeding 343.2Pa.

(2) Medical surgical masks
Comply with YY 0469-2004《 technical requirements, important technical indicators include filtration efficiency, bacterial filtration efficiency and respiratory resistance:

1. filtration efficiency: The filtration efficiency of μm sodium chloride aerosol under air flow (30 ± 2) L/min, 0.24 ± 0.06, is not less than 30%;

2. Bacteria filtration efficiency: under the specified conditions, the filtration efficiency of Staphylococcus aureus aerosol with an average particle diameter of (3 ± 0.3) μm is not less than 95%;

3. Respiratory resistance: suction resistance not exceeding 49Pa, and 29.4Pa under filtration efficiency flow conditions.

(3) General medical masks
 Comply with relevant registered product standards (YZB), generally lacks filtration efficiency requirements for particles and bacteria, or lower for particles and bacteria than medical surgical and medical protective masks.

(4) Ordinary disposable masks
Ordinary skim gauze masks are not managed as medical devices

Protective effect:

General disposable mask <General medical mask <Medical surgical mask <medical protective mask