Globe Scientific HDPE Scintillation Vial with Attached Screw Cap. Scintillation Vial, 4 ml, 13.8 dia x 53 mm H with Cap, HDPE, 13.8 dia x 52 mm H without Cap, with Attached White Polypropylene Screw Cap, Non-sterile, Small Volume Scintillation Vial is Most Economical Size