Limited volume, glass/plastic vials 0.1mL Limited volume Type 1 borosilicate glass insert Vials with glass inner core combine Type I borosilicate glass with thermoplastic polymer outer shell Glass is only contact between sample and seal Polymer provides excellent dimensional tolerance reliability for capping and instrumentation, and prevents breakage Conical interior ensures maximum retrieval of contents without the hassle of using removable inserts Screw Top Finish (8-425)