| The Miele Super Air Clean filter is designed for normal use and is made of multi-ply material which is electrostatically charged to retain dust particles. It retains 99.95% of particles down to 0.5 of a micron and 94% of particles down to 0.3 of a micron. This filter lasts as long as 5 dustbags and is included free of charge from Miele with each box of Miele certified dust bags. The Miele Active Air Clean Filter combines the Super Air Clean filter with an active charcoal cassette which absorbs odors from the dust bag --especially useful if you have pets. This filter retains 99.95% of particles down to 0.5 of a micron (only 1& 1/200th the width of a strand of human hair) and has a life of 50 hours or 12 months of use. The Miele Active H.E.P.A. (High-Efficiency Particulate Air) filter not only captures and retains tiny, lung-damaging particles (including dust mite feces and pollen), it also uses the same Generally Activated Charcoal filter (GAC) that the Active Air Clean filter uses to absorb odors. This Miele filter conforms to the new stringent European standard for filtration (EN 1822) which means that it actually traps 99.99% of all particles as tiny as 0.3 of a micron These filters are so well designed that they only need to be replaced after 50 hours of use, or approximately 12 months. There is also a convenient spot to write the date on the filter, which takes the guesswork out of when the filter should be replaced. |