Globe Scientific’s self-standing centrifuge tubes are available in 30mL and 50ML sizes. The 30mL tubes are offered in transparent polystyrene (PS) and translucent polypropylene (PP). They are available with or without an integral spoon for fecal collection. The 50mL tubes are offered in polypropylene (PP) and feature printed graduation marks and a white writing area. They are available in sterile, non-sterile and metal-free versions.