50 ml Conical Centrifuge Tube with Conical Bottom, Leakproof Screw Caps, Sterile, up to 12000xg, Polypropylene (PP) (Pack of 25): Amazon.com: Industrial & Scientific
15 ml Centrifuge Tubes, 50 ml Centrifuge Tubes, Centrifuge Tubes Manufacturer India
Cone Bottom Tanks TD Series - Peabody Engineering Product Catalog