Borosilicate glass KIMAX-51 composition assures the best all-around chemical durability of commercial glasses now available for laboratory ware. Complies with ASTM Specification E438, Type I, Class B glass requirements.

With a huge variety of cap colors and several interchangeable styles, these tubes & caps make great storage vials which can be used in a wide range of environments including ultralow temperatures.

ProSource Scientific graduated microcentrifuge tubes are made from virgin polypropylene and are autoclavable, boil-tested and leaf-proof with flat snap-tops for labeling.

Premium quality general purpose 15ml screw cap centrifuge tubes with printed graduations.

Premium quality general purpose 50ml screw cap centrifuge tubes with printed graduations.

These sterile tubes come with 2-position caps for aerobic or anaerobic closing, and are precision-molded from premium grade polystyrene or polypropylene. Packaged in inner bags of 25.