A specimen tube, made of polystyrene (PS), is a laboratory container used to store and transport biological or chemical samples. Polystyrene is a common material for laboratory tubes due to its low cost, transparency, and ease of use. Specimen tubes made of polystyrene are commonly used in a variety of laboratory applications, including medical and clinical settings, as well as in scientific research and educational institutions.

They are available in different sizes and volumes and often come with screw caps or snap-on lids for secure storage and transportation of samples. Polystyrene specimen tubes are lightweight and easy to handle, making them a convenient solution for storing and transporting samples in laboratory settings.