Sterile, conical, polystyrene test tube. Polystyrene tubes are best suited for procedures requiring high optical clarity. Polyethylene dome-seal screw cap offers positive seal over the full circumference. Resins are selected via an intense array of U.S. Pharmacopoeia (USP) toxicity tests. Medical-style packaging better assures sterile presentation.

• High-clarity polypropylene tube, Polyethylene cap
• Approximate tube dimensions are 30 mm O.D., 115 mm length
• Sterilized by gamma irradiation, nonpyrogenic
• Dark blue printed graduations, white writing patch