13463-04, Stirrer,slow speed,standard,four position,1L,Troemner 986380 Slow speed, 1-150rpm, stirrers designed for use in cold rooms, incubators and CO2 environments from -10 to 60 degrees C. Ideal for applications such as uniform suspensions of cell cultures or any slow controlled stirring that requires a constant speed under changing load or viscosity conditions. Standard models feature a speed control knob while advanced models feature a LED display, timer, alarm and ramping controls. Single position models have aluminum tops, multi-position models feature a glass-filled nylon top. 120 & 230v. 2 year warranty.