En un tub d' assaig es porten a terme petites reaccions o experiments. Hi ha molts tipus de tubs. Alguns, per exemple, tenen connectors, d' altres estan gravats per fer mesures, i d' altres estan reforçats perquè durin més.
In a test tube small reactions or experiments are performed. There are many different types of tubes. For example some have connectors, some are etched for measurements, some are hardened for durability.