Scheffler filter Germany Scheffler model Scheffler price

The prototype of the Scheffler filter is a respiratory protective device used by people to protect their breathing. The rapid development of air filters is closely related to the development of the military and electronics industries. According to records, as early as the first century in Rome, people used masks made of coarse linen for protection when purifying mercury. In the long period that followed, air filters also made progress, but they were mainly used as respiratory protective devices in some hazardous industries, such as the production of harmful chemicals. To clean contaminated air to the state required for production and daily life,