Globe Scientific offers an extensive line of multi-use test tubes. The tubes are molded from premium grade polystyrene for clarity or polypropylene for impact strength and stability to common acids, alkalies, and solvents. Polystyrene tubes can withstand up to 1500 RPM during centrifugation. Polypropylene tubes can withstand up to 3000 RPM and are autoclavable and freezable.   With such a broad range of styles and sizes, Globe Scientific is sure to have a tube to meet your particular application. Samples are available for your evaluation.