Centrifuge tube is a small cylindrical plastic or glass tube with a conical bottom that is designed to fit into a centrifuge rotor.

Centrifuge tubes can be classified into different types based on their size, capacity, and shape. Common types include micro centrifuge tube (usually with a capacity of 0.2-2 mL), conical centrifuge tubes (with a capacity of 15-50 mL), and round-bottom centrifuge tubes (with a capacity of 5-100 mL).

Centrifuge tubes are essential tools in the field of life sciences and are used in a wide range of applications, from basic research to clinical diagnostics.