Manufactured in polypropylene, these tubes will withstand autoclaving ( 121°C for 15 minutes at 15 psi), boiling and centrifugation to 14,000 rpm. They are also suitable for freezing to -90°C.

A frosted marking area on the tube cap is provided for sample tagging and identification.

The 5 mL graduated prep tube is available in several versions, both conical bottom and free standing. The free standing fin arrangement permits easy viewing of samples in the lower tube section.