Pre-filters should be used in conjuction with the appropriate cartridge filter. By using a solid & liquid particle pre-filter you will prolong the life of existing cartridge filters.

Kit contains 4 disposable pre-filters & 2 pre-filter covers offering assigned protection factor of 10 x workplace exposure limit for very fine dusts, fibres, fumes and aqueous mists.  Conforms to EN143. Pre-filters help maximise the life of gas filters by filtering particulates and thereby reducing running costs Designed to fit JSP Midimask Respirators.