What is a Filti filter? Filti filter is a mask insert that can be inserted into the inner pocket of a cloth mask to increase it’s filtering performance. The filters are made in Canada using high quality Filti material from the USA. Filti filters up to 95% of 0.3 micron particles according to the TSI […]
Summary A PM2.5 filter is a mask insert that can be inserted into the inner pocket of a cloth mask to increase it’s filtering performance. It gets its name from an established standard based on 2.5 micrometers (microns) – equivalent to 0.0025 mm – a reference to the size of airborne particulate matter that this […]