Polypropylene tubes include a convenient flat bottom so they stand on their own, a large white frosted labeling area, silk screen graduations, and a leak-proof cap. Autoclavable at 121°C and 15 psi for 30 minutes. Radiation sterilized. DNase, RNase, Pyrogen and latex-free. Maximum RCF 9000. Additional Info: Self Standing Centrifuge Tube, Pp/High Density Polyethylene, 50ml, Pack/500 Package Size(L x W x H): 20 X 13 X 14 (IN) Categories: Centrifuge Ware, Tubes HTS Code: 3926.90.9910 UNSPSC: 4.11217e+007 Country Of Origin: INDIA