Zehnder Filter set Coarse 60% (G4) + ePM1 50% (F7) 990 430 594 The unit includes an easily

The unit includes an easily removable

wipe clean cover

testo Smart App (free download)

oxidisation resistance

Zehnder Filter set Coarse 60% (G4) + ePM1 50% (F7) 990 430 594 The unit includes an easilyThis set consists of two filters, one filter Coarse 60% (G4) and one filter ePM1 50% (F7). Coarse 60% and ePM1 50% are the names according to the new filter standard ISO 16890. Course refers to particles 10 micron. ePM1 refers to particles 0,3 1 micron. Coarse 60% means that at least 60% of particles in the size interval 10 micron are removed. ePM1 50% means that at least 50% of particles in size range 0. 3 1 micron are removed G4 and F7 are the