Temperature range from room temperature to 95°C. Thermostatic control with an accuracy of ±1°C. Double-walled, inside made of stainless steel and outside mild steel sheet, painted in epoxy powder coating. The oscillating tray is riding on ball rollers. Shaking speed range 40 to 140 RPM Shaking trays can hold either test tubes or flask of 25ml, 50ml, 100ml. To work on 220/230volts A.C. without RPM Indicator.