Air purifiers with complex filter equipment have already been in use for many years in the commercial and private sector. Up to now, they have mostly been used to remove solid particles (dust and fine dust) and macrobiological substances (e.g. allergy-causing pollen).
Due to the Covid 19 pandemic, both the demand and the requirements for these devices have increased significantly. The focus is now on the reliable removal of pathogens that are significantly smaller than 1 µm.
HEPA filters of classes HEPA13 and HEPA14 meet this demand, with the increasing use of the more powerful HEPA14 filters responding to the increased need for safety.
Further information on this topic can be found in our FAQ collection.