Mask filter cotton
Face mask filter cotton specification: 35g/45g color: white usage and description: face mask filter cotton is water repellent and water absorbent with the following characteristics: high porosity, stable size, easy to remove ash, high dust resistance, clean, strong moisture resistance, stable quality, large dust capacity, effective separation of air dust and long service life, etc. Its dust protection principle is: filtering, is when the dust impinged on the needle cotton, through - layer upon layer of barrier, will be some big particles of dust barrier in the mask filter cotton. Respirable dust smaller than 2.5 microns is blocked in the process of passing through the filter material, which ACTS as a filter for air. At the same time, masks filter cotton on the air