A crucible with lid is a type of laboratory container used for heating and melting materials at high temperatures. The crucible itself is typically made of porcelain or other high-temperature-resistant material, while the lid is made to fit snugly over the top of the crucible to contain the contents. Crucibles with lids are commonly used in chemical and materials science research, as well as in industrial settings for high-temperature applications. They are useful for melting and fusing materials, as well as for testing the effects of high temperatures on various substances. Crucibles with lids come in a range of sizes, with larger sizes able to accommodate larger quantities of materials. They may also be designed with various shapes or features, such as spouts or pour lips, to make handling and pouring easier. Overall, a crucible with lid is an essential tool in any laboratory or industrial setting where high-temperature applications are required. They are durable, heat-resistant, and capable of withstanding extreme temperatures and conditions.