3M FT-30 Qualitative Bitter Fit Test KitThe products can be used to validate face to respirator seal on any disposable respirators or half mask respirators. Not suitable for fit testing full facepiece respirators this must be through Quantitative face fit testing. To fit test a half mask respirator, it must be fitted with a P3 particulate filter for the fit test. 3M offers two Qualitative Fit Test Apparatus Kits FT 10 (Sweet) and FT 30 (Bitter). FT 10 uses a test solution of sodium