Replacement nebulizer used with the 3M™ Qualitative Fit Test Apparatus FT 10, FT 30 and the 3M™ Training and Fit Testing Case FT 20.3M™ Fit Test kits and accessories are designed to help your organisation meet regulatory fit testing requirements for tight fitting respirators. The kits can be used to validate face to respirator seal on any disposable respirator or half mask respirator. Not suitable for fit testing full facepiece respirators - this must be through Quantitative face fit testing.