Labotronics 2- Position hotplate stirrer HPS is a black ceramic top hotplate stirrer with a stir range of 0 rpm to 2000 rpm. Features a stirring capacity for flasks ranging from 50 ml to 1 L. It is equipped with PID controlled temperature of 400 °C for uniform heat distribution. It offers digital temperature control and an outer thermocouple that measures and controls the liquid temperature value together with the front panel.