Amazon.com: Roller Mixer, LCD Digital Laboratory Mixer, Two Modes of Rolling and Rocking, Design of Six Rollers, Adjustable Speed, Up to 70rpm, for Laboratory, Chemistry, Scientific Experiment : Industrial & Scientific
Laboratory Roller Mixer Rolling Mixer Blood Collection Tube Oscillator Blood Mixer Digital Display Adjustable Speed and Time - AliExpress
Blood Roller Mixer With 4 Rollers 230mm Long - Etsy