Used for rapid, safe washing and drying of cuvettes, tubes and small scale volumetric items up to approximately 22mm OD. Unit is supplied with one gasket, a tube washer, an Erlenmeyer flask and a 3/8" hose connection. Operates efficiently with a conventional sink aspirator. Recommended for 10mm NMR tubes. All glass apparatus manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements.