Refill ONLY Kit (NO CASE) for Surefill Blood Borne Pathogens 10 Series . Aero Blood Born Pathogen Kit has been designed to cater for all blood borne related spills in the workplace. A blood borne spill is an unintended release of a potentially infectious material. Proper response to such incidents ensures employee safety while reducing environmental contamination concerns. With the unique four pouch refill the items are kept organized and easily accessible in the event of a spill.