An extraordinarily wide temperature range that spans almost all test tube heating applications. Ideal for a variety of digestion procedures carried out in 16 mm or 26 mm diameter tubes. Operating temperature range of ambient +10°C to 400°C. Stability ± 0.5°C for long-term temperature control. Analog temperature setting using a knob and dial with 5°C divisions. Switch setting ranges of up to 200°C and 200°C to 400°C. Adjustable cycling thermostat requires a minimum setting of 200°C. Heat-up rate, from ambient to maximum temperature, is 100 minutes. Specifications: Temperature Range: ambient +10 to 400°C, Temperature Stability (DIN 58966) at 37°C: ± 0.5°C, Overall Dimensions (L x W x D): 13½” x 8” x 6½”, Heating Block (L x W x H): 7½” x 5 ½” x 3”, Shipping Weight: 21Lbs (9.5kg). Three-year warranty. 120 VAC.