A trough glass is a shallow, rectangular glass container used for holding liquids in laboratory settings. It is typically made of high-quality, heat-resistant glass and is used to contain chemicals, solutions, or other liquids during experiments or other laboratory processes.

The trough is designed to be wide and shallow, which allows for easy access to the liquid inside, and its flat bottom provides a stable surface for mixing, heating, or other manipulations.

Trough glasses come in various sizes and are typically used in chemistry, biology, and other sciences. They are known for their durability, ease of use, and versatility, and can be easily cleaned and reused.