Industry News

Execution standards for medical masks

2022-04-20
Medical surgical masks must comply with my country's pharmaceutical industry standard number: YY 0469-2011, "Technical Requirements for Medical Surgical Masks". The main technical indicators are as follows:
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%.
Bacterial filtration efficiency: under the specified conditions, the filtration efficiency of Staphylococcus aureus ATCC6538 is not less than 95%; pressure difference: under the specified conditions, the pressure difference between the two sides of the mask for gas exchange should not be greater than 49Pa; synthetic blood penetration : After 2ml of synthetic blood is sprayed to the outer side of the mask at a pressure of 16.0kPa (120mmHg), the inner side of the mask should not penetrate.
other:

Before use, please check whether the packaging is in good condition, confirm the external packaging mark, production date, and validity period, and use it within the sterilization validity period; make sure that the mask covers the bridge of the nose to the jaw after unfolding to obtain the expected protective effect; disposable medical Surgical masks are not allowed to be reused; if the packaging of medical surgical masks is found to be damaged before use, it is prohibited to use them.