Designed for families require high sanitary or allergy sufferers Developed together with German Allergy and Asthma Society (DAAB), the core technology of Dust mite & Allergen Systems is a complete HEPA Class 12 vacuum cleaner made by Miele. The results (acc. to the European standard for filtration systems EN 1822 & British Standard BS 5415) demonstrated that this filter system rids air of more than 99.5% of all particles 0.3 microns in size like dust mites, bacteria and allergens from your mattresses, sofas, stuffed toys & carpets/rugs etc.