Anti-coronaVirus infection 4 Tier Disposable surgical face mask N95 Mask supplier in stock good price to U.S.A
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mask according to performance characteristics and scope of application, medical masks can be divided into: medical protective masks, medical surgical masks, general medical masks.
Medical protective mask
Meets GB19083-2003 "Technical Requirements for Medical Protective Masks" standard, important technical indicators include non-oily particle filtration efficiency and airflow resistance:
(1) Filtration efficiency: Under the condition of air flow rate (85 ± 2) L / min, the filtration efficiency for aerodynamic median diameter (0.24 ± 0.06) μm sodium chloride aerosol is not less than 95%, which is in line with N95 (Or FFP2) and above.
(2) Inspiratory resistance: Under the above flow conditions, the inspiratory resistance does not exceed 343.2Pa (35mmH2O).
The anti-side leakage design of the mask is to prevent air from being sucked in through the gap between the mask and the human face without filtering, considering technical requirements. Air is like water flow, where the resistance is small, it flows first. When the shape of the mask is not close to the human face, dangerous substances in the air will leak from the close to the human's respiratory tract. Well, even if you choose a filter with the best mask. Nor can it protect your health. Many foreign regulations and standards stipulate that workers should regularly perform mask tightness tests. The purpose is to ensure that workers choose appropriate masks and wear them in the correct steps.
MacKing Materials
2 layers of masks: non-woven, nose bridge, ear hook.
3 layers of masks: non-woven fabric, bridge of nose, ear hook, filter paper.
Activated carbon mask: non-woven fabric, bridge of the nose, ear hook, filter paper, activated carbon filter paper.
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