Translucent polypropylene copolymer tubes have excellent chemical resistance. For use up to 50,000 x g in refrigerated or non-refrigerated centrifuges. Supplied without closure. CN3110-6 is lipped; 50-mL size available lipped (CN3110-7) or non-lipped (CN3110-5). Must be filled to 80% of the total capacity for proper performance.