The 3M™ test hood is for fit testing the seal on any particulate, gas or vapor with particulate pre-filter respirator This face test hood serves as a test environment for a bitter or sweet solution Versatile, the mask works with several test kits, including the FT-10, FT-20 and FT-30It's OSHA compliant to help your facility stay safe and meet regulations Each pack includes 10 face fit hoods