A porcelain mortar and pestle is a laboratory tool used for grinding, crushing, and mixing solid substances. The mortar is a bowl-shaped container made of porcelain, and the pestle is a rod-shaped tool used for grinding and crushing the substances against the interior of the mortar.

Porcelain is a common material for mortars and pestles due to its high resistance to chemical corrosion and its ability to withstand high temperatures. Mortar and pestles are commonly used in chemistry, pharmaceuticals, and other laboratory applications where grinding, crushing, and mixing of solid substances is required.

They provide a cost-effective and convenient solution for manual grinding and mixing in laboratory settings.