This design uses flexible PTFE tubing to direct a power wash stream of wash solvent to clean the inside of NMR tubes. A vacuum source (user supplied) is required. An o-ring is slipped over each tube to form a vacuum tight seal and is removed after washing. The complete unit is provided with a one liter reservoir bottle and all wetted parts are PTFE or borosilicate glass. Accommodates 7" and 8" tubes.