The difference in protective performance between medical masks and non-medical disposable masks

In the standards for medical surgical masks and disposable medical masks, the bacteria filtration efficiency is required to reach more than 95%, which means that both masks can clearly block bacteria. However, there is a significant difference. The filtration efficiency of medical surgical masks for non-oily particles with a diameter of 0.3μm exceeds 30%, and the fluid resistance to blood, body fluids, etc. splash (droplets) reaches 120mmHg, but disposable medical masks do not. no request.

Then non-medical-grade masks must be lower requirements, and only serve as daily protection.