The HEPA filter in the colour blue from Xiaomi is a replacement filter for the Mi Air Purifier air purifier. It has a triple filter system that ensures high filtration performance. The integrated HEPA13 filter captures 99.97% of all allergens with sizes starting from 0.3 microns, helping to purify the air from particles such as pollen, dust, mould spores and other allergens. Compatible with Xiaomi Mi Air Purifier Pro H