A porcelain Gooch crucible is a type of laboratory container used for the filtration and analysis of fine powders or other small particle samples. It is typically made of porcelain, a type of ceramic material that is able to withstand high temperatures and chemical corrosion.

The Gooch crucible is characterized by its unique shape, which includes a perforated disc at the bottom, used to separate the solid sample from the liquid. The Gooch crucible is commonly used in various laboratory applications, including metallurgy, mineral analysis, and other particle analysis techniques.

It is known for its durability, heat resistance, and ease of use, and provides a cost-effective solution for the analysis of small particle samples in laboratory settings.