Select from our portfolio of high-quality glass 8mm crimp/snap top vials that are ideal low-volume sample vials for 6mm, 7mm and 8mm HPLC Screw Neck Vial for Autosampler--aijiren 250uL Conical Micro-Insert, 31*5.7mm, Suits for 9mm Vials 250uL Conical Micro-Insert, 31*5.7mm, Suits for 9mm Vials 250uL Micro-Insert with Mandrel Interior & Polymer