Shaking water bath system combines temperature control with multi-motion, multi-speed sample agitation. The system consists of a 20 or 28 liter water bath, independent shaking platform, and special, polycarbonate, see-through cover. This dual-action shaker system can be used for both linear and circular movement and offers agitation speed of 30 to 180 rpm and a 2 to 12 mm range of motion. Temperature (displayed in degrees C or F) is maintained from ambient +5 C to 100 C with ۪.2 C uniformity. Standard features include digital temperature readout, one-touch set point recall, high temperature alarm and automatic over-temperature safety. Cover permits full movement of shaker-arm trays while minimizing heat loss and evaporation and accommodates flasks as large as 1000 ml.