3M™ Collar FT-15 is used with 3M™ Qualitative Fit Tester FT-10 and FT-30 to ensure hood is secure. 3M offers fit testing kits and accessories designed to help your organization meet the CSA Z94.4 standard for respiratory protection and OSHA's requirements for fit testing on respirators. These products can be used to check the tightness of all particulate respirators or gas and vapor respirators with a particulate pre-filter. Use these kits with the 3M™ Qualitative Fit Testers FT10 and FT30 to ensure the hood is secure.