Mechanical filter material is considerably less sensitive to factors than electrostatic
The filter material used determines the life of filters for fine particles. Is it mechanical or electrostatic? After all, the properties are entirely different. Mechanical filter material is considerably less sensitive to factors such as air humidity, ambient temperature and age. In addition to efficiency, it is necessary to take the concentration of fine particles into account for both. The speed at which air flows through the filter material of the mask also has a major effect on filter efficiency, especially with electrostatic filters. An electrostatic filter becomes less efficient as it becomes full of fine particles, whereas a mechanical filter becomes more efficient as it becomes full.