Memmert Humidity Chamber - HCP provides excellent control, making it easy to achieve uniform atmosphere and temperature distribution in simulating environmental condistions. This 241L (8.5 cu ft) model is the 115 volt, with working humidity ranges of 20 to 95% rh, within temperatures of at least 7C over ambient up to 90C with humidity control of 20%RH-95%RH. Includes (2) Stainless Steel Perforated Shelf, Atmocontrol Software, Manual, Operation manual, Calibration Certificate, Power Cord, Water tank and connections!