Glass Vial Inserts for 2ml HPLC Vials Volume: 150ul, 250ul, 300ul Bottom Type: Mandrel Interior & Polymer Feet; Conical Bottom, Flat Bottom Suitable for : 8-425, 9mm, 10-425, 11mm Vials. Chromatography Autosampler Vial Inserts | Fisher Scientific. Thermo Scientific™ Chromacol 9mm Wide-Opening Screw Thread Vial Inserts, Flat Bottom.