In microbiology, an incubator is a device for controlling the temperature, humidity, and other conditions in which a microbiological culture is being grown. The simplest incubators are insulated boxes with an adjustable heater, typically going up to 60 to 65 °C (140 to 150 °F), though some can go slightly higher (generally to no more than 100 °C). More elaborate incubators can also include the ability to lower the temperature (via refrigeration), or the ability to control humidity or CO2 levels. The Hova-bator incubator is the world's first low wattage still-air incubator. Made of thermal plastic foam with 2 large windows and a mercury thermometer (accurate to within 1/2 degree). Comes complete with wire egg rack. 110 volt, 25.3 watts. Note: Not recommended for Ostrich, Emu or Rhea eggs.