Heavy Duty Programmable Inversion TumblerThe EL665 Programmable Inversion Tumbler is designed to mix wet or dry samples, gently for suspensions, culturing, and dry blending or more aggressively by programing the tumbler to rotate clockwise stopping and then rotating counterclockwise. The EL665 is designed with a continuous duty cycle rated stepper motor, this machine can handle continuous use of unbalanced loads which is often the case when not all the containers are loaded or filled to the