The Benchmark Scientific B2402 BeadBath Duo™ 2L is a revolutionary benchtop thermal unit designed to maximize laboratory efficiency and enhance temperature control precision by offering dual operational modes: traditional water bath and innovative thermal bead bath functionality. This 2-liter capacity instrument is the first of its kind, featuring a dedicated digital ‘MODE’ button that optimizes the internal heating and sensing elements to ensure absolute thermal accuracy, whether utilizing water or thermal beads. The BeadBath Duo eliminates the common drawbacks of standard water baths, such as constant water evaporation, biological contamination risk, and the necessity for specialized tube racks. When operating in bead mode, the unit provides a dry, contamination-resistant environment that allows for immediate, accessory-free securing and angled incubation of virtually any vessel size. With advanced features like the Quik-Cal™ function for simple, in-lab calibration, the B2402 guarantees reproducible results and minimal downtime, making it an indispensable tool for molecular biology, biochemistry, and clinical testing protocols requiring precise temperature management and superior process integrity.