A crucible with a lid is a laboratory vessel or container used for heating, melting, or otherwise processing substances at high temperatures. The crucible itself is typically made of a heat-resistant material such as porcelain, ceramics, or more commonly, high-quality materials like fused silica or alumina (aluminum oxide). The lid is used to cover the top of the crucible during heating or to contain and protect the contents. A crucible with a lid is a laboratory container designed for high-temperature applications. It provides a controlled environment for heating and processing materials, making it an essential tool in various scientific and industrial processes.