BD Falcon 15 mL conical centrifuge tubes provide high-clarity polypropylene construction for reliable urine sample management. Each tube measures approximately 17 mm O.D. and 120 mm in length. Dark blue printed graduations and a white writing patch support clear volume reading and labeling. The polyethylene plug-seal screw cap delivers a positive, full-circumference seal, with a dome seal tip to protect contents. Medical-style packaging better assures sterile presentation; tubes are sterilized by gamma irradiation and are nonpyrogenic.