Model: BJZFY-2 ■ Instrument features variable speed motor has 10-120rpm and automatic lifting function. Rotating body by a group of reliable micro-motor, speed motor control and integrated circuit device. In the electronic speed action can be stably rotated within 10-120rpm range. Moving up and down movements of the rotating body system uses thread lifting mechanism. Connected to the screw rotating hand wheel, can rotator, rotator, evaporator flask, condenser, collecting bottles simultaneously raising or lowering the maximum travel distance 150mm. ■ The main technical parameters Input voltage 220V ± 10% 50Hz Input Power 1000W maximum travel distance 150mm Temperature accuracy ± 1 ℃ speed 10-120rpm stepless speed regulation by volume 2L adjustment knob on the control box to achieve