An Oil Bath (Round) is a laboratory heating device specifically designed to maintain precise and uniform temperatures for experiments and processes that require controlled heating over extended periods. Unlike water baths, oil baths can reach higher temperatures (up to 300°C or more) without evaporating quickly, making them ideal for applications involving high-temperature requirements.

The round oil bath typically consists of a cylindrical or hemispherical metallic container, usually made of stainless steel or aluminum, filled with high-grade, heat-resistant oil. It is heated using an embedded or external heating element, and many modern versions come with digital or analog temperature control systems to allow precise heat regulation. The rounded design ensures even heat distribution around the immersed vessel, such as flasks or beakers, enhancing thermal efficiency.

This type of oil bath is widely used in chemical synthesis, distillation, reflux reactions, and organic compound processing, where maintaining a stable high temperature is crucial. The use of oil as a heating medium allows for uniform thermal conductivity and avoids localized overheating, which could damage sensitive samples or distort experimental results.

For safety and convenience, most round oil baths are equipped with thermostatic control, thermal insulation, and over-temperature protection. Some advanced models also include magnetic stirring options to facilitate mixing during heating.