Vapor tube/bump trap adapter is designed to be used with the Büchi® R-200/205 rotary evaporators. This adapter combines a vapor tube adapter and a bump trap. Trap has an extra coarse fritted disc sealed between the lower inner joint and the top flange. Adapters have a 50mm OD top flange with a tapered interior to fit the Büchi® sealing ring. Lower portion of the adapter has the listed standard taper inner joint. Each adapter is supplied complete with the corresponding size Keck clip.