网页Description. 1.5ml Screw Cap Tube,Knurl, NonSkirted,Natural, Non-Sterile tube w/ unattached cap. Capacity (Metric) 1.5 mL. Material. Ultra Clear 100% Virgin Polypropylene (Tube and Cap), Ethylene Propylene Rubber Diene Monomer (O-ring) Packaging. 500 x pk, 10 pk x cs, 5000 x cs. Single Bagged. ZipLock bag.