Benchmark Scientific M2100 Tube Rocker Cardinal Health Lab Mixer 115V - TESTED. Equip your laboratory or clinic with this reliable Benchmark Scientific M2100 Tube Rocker, branded for Cardinal Health. Designed to provide a gentle, precise rocking motion, this benchtop mixer is ideal for blood collection tubes, centrifuge tubes, and general clinical mixing applications. Its compact footprint ensures it will easily integrate into any workspace without taking up valuable bench space. Gentle Rocking Motion: Engineered to provide consistent, smooth agitation for sensitive biological samples and standard laboratory tubes. Compact Benchtop Design: Maximizes your available laboratory counter space. Plug-and-Play Operation: Simple single-switch operation with an integrated power cord for immediate use. Trusted Manufacturing: Built by Benchmark Scientific, a recognized name in reliable laboratory equipment. Tube Rocker / Lab Mixer.