SureTherm ST-45 PLUS CO2 Incubator, 45 Liter, 115V with two shelves. Includes: High heat decontamination, humidity control and split inner door with 2 compartments Precision temperature control, 6-sided heating Precise monitoring over CO2 with dual beam IR sensor Seamless, stainless-steel chamber Digital control of humidity percentage With our unique and proprietary heat distribution technology, the Benchmark ST Series of CO2 incubators provide the highest levels of temperature accuracy with minimal fluctuation (within 0.1°C). The six-side heating system, in combination with a low speed internal fan, uniformly spreads air throughout the chamber (without air exchange from the external environment). The chamber walls are constructed of high grade (316) stainless-steel, and all corners are rounded, preventing the accumulation of dirt/debris. For added security, all models feature an internal alarm to alert the user if the CO2 percentage changes, or the temperature fluctuates by more than 1°C from the set point. In addition, a quick-cal calibration button allows for quickly adjusting the charmer temperature to match that of a properly calibrated external thermometer. Two series (standard and PLUS) are each available in 45L and 180L chamber sizes. PLUS models include advanced programming for high heat decontamination (at 125°C), a unique split inner glass door for access to the chamber without exposing it fully to the external environment and programmable humidity percentage, up to 95%. Specifications: Temperature Range: Ambient +5° to 60°C Temperature Increments: 0.1°C Temperature Uniformity: ± 0.4°C* Temperature Stability: 0.1°C Temperature Accuracy: 0.1°C CO2 Range: 0 to 20% CO2 Increment 0.1% CO2 Accuracy ± 0.1% CO2 Sensor: Dual Beam IR Chamber Dimensions: (45L) 13.2 x 14.2 x 15.4 in. / 33.5 x 36.1 x 39.2 cm Chamber Volume: 45L Chamber Material: Stainless Steel (316) Exterior Dimensions (45L): 16.5 x 18.3 x 21.8 in. / 42 x 46.5 x 55.3 cm Weight (45L): 77 lbs / 35 kg  Electrical: 120V or 230V, 50-60Hz (350W) High Heat Decon: 125°C for 8 hours Humidity Control: Up to 95% Split Inner Door Compartments: 45L  Optional:  H3550-45-SH Additional shelf for 45 liter incubators, 1 each $149.00