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The difference between medical protective masks and protective masks

by:Copper Plus     2021-06-16
The difference between medical protective masks and protective masks 1) Medical protective masks meet the GB19083-2003 'Technical Requirements for Medical Protective Masks' standard. Important technical indicators include the filtration efficiency and airflow resistance of non-oily particles: 1. Filtration efficiency: Under the condition of air flow (85±2) L/min, the filtration efficiency of sodium chloride aerosol is related to the median aerodynamics. The diameter (0.24±0.06) μm is not less than 95%, which is consistent with N95 (or FFP2). 2. Inspiratory resistance: Under the above flow conditions, the inspiratory resistance does not exceed 343.2Pa. (2) Medical masks meet the technical requirements of YY 0469-2004 medical masks. Important technical indicators include filtration efficiency, bacterial filtration efficiency and respiratory resistance: [h] 1. Filtration efficiency: Under the condition of air flow (30±2) L/min, the filtration efficiency of sodium chloride aerosol with aerodynamic median diameter (0.24±0.06) μm is not less than 30%; 2. Bacterial filtration efficiency: Under the specified conditions, the filtration efficiency of Staphylococcus aureus aerosol with an average particle size of (3±0.3) μm is not less than 95%; 3. Breathing resistance: In terms of filtration efficiency, the inhalation resistance is not lower under flow conditions. It exceeds 49Pa, and the expiratory resistance does not exceed 29.4Pa. (3) Ordinary medical masks meet the relevant registered product standards (YZB), and usually lack the filtration efficiency requirements for particles and bacteria, or the filtration efficiency requirements for particles and bacteria are lower than medical surgical masks and surgical masks. Medical protective masks. (4) Ordinary disposable masks Ordinary degreased gauze masks are not managed as medical devices. According to the requirements of various standards and important technical indicators. Medical masks: Medical protective masks are suitable for medical staff and related personnel to prevent airborne respiratory infections, and It has a high level of protection; medical masks are suitable for basic protection of medical staff or related personnel during invasive surgery and measures to prevent the spread of blood, body fluids and splashes; ordinary medical masks are not accurate enough to protect pathogenic microorganisms. In the environment, it can be used for disposable hygiene care or to block or protect other particles other than pathogenic microorganisms (such as pollen).
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