A mains electricity (AC-powered) receptacle for water designed to immerse and keep objects or products at a hot, or less frequently, cold temperature; typically the temperature can be controlled from a few degrees below or above ambient temperature to close to 100? Celsius (212? Fahrenheit). It typically consists of a corrosion-resistant (e.g., stainless steel) container that can store water, heating elements, sensors, thermostats, and controls; some types incorporate refrigerating and/or stirring/agitating capabilities. It varies in size from a few to several hundred litres; it is used in various clinical laboratory procedures and may supply tempered water to lab equipment via a pump.