Microcentrifuge tubes are skirted for free upright standing or placment on lab benchtop. Microcentrifuge tubes are manufactured of siliconized polypropylene which provides for extremely low surface adhesion and maximum sample recovery. Ideal for packaging transporting and storage of any diagnostic tests biological samples or most reagent solutions. Microcentrifuge tubes withstand 25 000xg forces; screwcaps sold separately (see Cat#: C2821-4A in this category). Ideal for protein or nucleic acid studies. 1000/Pack. Manufacturer: . Manufacturer Part No: BP-