A wooden block is a small rectangular piece of wood that is commonly used in laboratory settings for a variety of purposes. It can be used as a support for test tubes, beakers, and other lab equipment during experiments, or as a simple spacer to separate items on a lab bench.

Wooden blocks are often preferred over plastic or metal counterparts because they are non-reactive and do not interfere with the chemical reactions taking place in the lab. Additionally, they are easy to clean and can be reused multiple times. Wooden blocks come in different sizes and can be made from various types of wood, such as pine, oak, or maple.