Centrifuge Tubes 15 ml PP Conical Bottom | Corning Cat. 430791 1 pack isi 50 tube Descriptions : Corning 15 mL PPCentrifuge Tubes,Bulk Packedwith CentriStar Cap, Sterile, 50 pcs per pack, 500 pcs per case Corning 15mL clear polypropylene (PP) centrifuge tubes come with the advanced polyethylene CentriStar caps and are packed 50 per rack. The CentriStar Cap has a easy-on/easy-off flat top and offers advanced ergonomics with its wider knurls and roll-over edge design for easier gripping. This leak-proof design comes with a revolutionary plug feature that virtually eliminates all seepage when used under recommended conditions. Superior Performance - Maximum RCF is 12,500 xg - Temperature range from -80C to 120C - 5 year shelf life Ease of Use - Leak proof design - Easy-on/easy-off cap - Clear accurate graduations - Large white marking spots Reliable Quality - Certified RNase-/DNase-free - Heavy-metal-free color concentrate - Medical grade polypropylene - Nonpyrogenic - Sterile