1.5ml Screw Neck Autosampler Vial Wholesale-Aijiren 2ml Dec 3, 209 · .5 ml screw topped Wholesales 250ul micro volume glass insert suit for crimp vials. Chromatography Vial Inserts | VWR. Description: These inserts are suitable for use with 9 mm (2 ml) screw or Description: Vial insert, 250 uL, pulled point glass, Insert size: 5.6 x 31 mm. Aijiren 250ul Vial Insert, Glass Spring Bottom for 9, 10, 11mm Vials. Micro inserts can be used with screw tops, crimp tops, or snap top vials.