A porcelain crucible (wide form with lid) is a laboratory container used for heating and melting substances in high temperature applications. It is typically made of porcelain, a type of ceramic material that is able to withstand high temperatures and chemical corrosion.

The wide form of the crucible provides a larger surface area for heating and melting substances, while the lid helps to contain the substance and reduce the risk of spillage or evaporation. Porcelain crucibles with lids are commonly used in chemistry, metallurgy, and other high temperature applications where precise control over temperature and containment of substances is necessary.

They are known for their durability, heat resistance, and ease of use, and provide a cost-effective solution for high temperature applications in laboratory settings.