... heat and stir in experiment . features of this school lab equipment 1.Use the heating units to heat,have the characteristics ... angle.8.Stepless speed,low stable,high strength. Technology parameters1.power supply:~220∨,50Hz2.range of the adjustable speed:50-1800 ... ,100,250,500,1000,2000,3000,5000,10000,20000ml5.Heating power:180-2200W6.Temperature controlling accuracy:±1°C7.Temperature controlling mode ...