Many different types of laboratory apparatus are made of porcelain, including:

* Crucibles: Crucibles are used to heat materials to high temperatures. They are usually made of porcelain because it can withstand high temperatures without cracking or melting.

* Dishes: Dishes are used to hold and mix chemicals. They are usually made of porcelain because it is easy to clean and does not react with most chemicals.

* Mortars and pestles: Mortars and pestles are used to grind solids into powders. They are usually made of porcelain because it is hard and resistant to wear.

* Beakers: Beakers are used to hold and mix liquids. They are usually made of porcelain because it is easy to clean and does not react with most chemicals.

* Test tubes: Test tubes are used to hold and mix liquids. They are usually made of porcelain because it is easy to clean and does not react with most chemicals.