Cole-Parmer Roto-Torque Variable Speed Rotator, 115 VAC, 50/60 Hz 07637-21

Shakers have a speed range from 3 to 80 RPM. Rotators require one of the three attachments (sold separately) to hold your samples. What's included: AO-07637-21 07637-21 includes a 6-ft, three-wire cord with plug; AO-07637-21 07637-22 has a stripped end cord. Gentle rotating motion efficiently mixes the contents of your Test tubes, flasks and bottles lock at the desired angle with the adjustable tilt stand (included).