The 3M™ Fit Test Collar FT-15 is used with 3M™ Qualitative Fit Test Apparatus Kit FT-10 Sweet and FT-30 Bitter as the test environment.3M™ Fit Test Collar FT-15 provides a rigid supportive frame for the 3M™ Fit Test Hood FT-14. 3M Fit Testing kits and accessories are designed to help your organisation meet fit testing requirements for tight fitting resp