RotoMini Plus Variable Speed Rotator with Tube Holders, 115V, Cat. No.: BM-R2024, Benchmark’s new Roto-Mini series of rotating mixers provides a wide range of mixing capabilities, suitable for an array of laboratory applications including resuspension, protein binding, nucleic acid purification, histochemistry, hybridization etc. The mixers include interchangeable tube holders for accomomodating all common tube sizes from 0.5ml to 50ml. and the motion can be adjusted from vertical (end over end) mixing, to horizontal (rolling or hybridization style) mixing. Roto-Mini rotators are available in the “Plus” configuration.