List Inc. is marketing its CoRotating Processor, a high-volume twin shaft mixer/kneader for thermal processing of highly viscous, pasty or crusting materials. Available in continuous or batch mode, the CRP features two parallel agitators that intermesh as they rotate in a horizontal, figure-eight housing. The agitators have radially mounted, heatable or coolable discs with U-shaped mixing elements on the periphery, List said. The geometry of the kneading elements produces efficient surface renewal, good self-cleaning and narrow retention times. For more information, call 978-635-9521 or visit www.listgrp.com.