Thermo Scientific™ National Target Snap Cap Wide-Opening Vials are easier to fill and provide a larger target area for the autosampler needle. 19 DWK Life Sciences Kimble™ Titeseal™ 1mL Shell Vials, Clear; 51 Expansion borosilicate glass 8 × 43mm 20 Fisherbrand™ Screw Neck Vial, 18-400 thread, Glass, Clear For storage purposes.