Water Bath- Definition, Principle, Parts, Types, Procedure, Uses


A water bath is a laboratory device that uses heated water to maintain a constant temperature for samples or reagents that are immersed in it. It is also known as a bain-marie or a water oven. A water bath can be used for various purposes, such as incubating cell cultures, melting substances, warming reagents, or performing chemical reactions. A water bath typically consists of a metal container that holds water, a heating element that controls the temperature of the water, and a lid that prevents evaporation and heat loss. Some water baths also have additional features, such as a shaking mechanism, a circulating pump, or a digital display. A water bath can operate at temperatures ranging from ambient to near boiling point, depending on the type and application of the device. A water bath is an essential tool for many scientific and industrial processes that require precise and uniform temperature control.