9-425 Screw Top Glass Vial, Wide Opening, 2ml, Amber, 100/pk Wide opening to prevent syringe problem; Compatible with most common HPLC or GC instruments. GUIDELINES FOR AUTOSAMPLER VIAL SELECTION 9-425 aijiren. 1050, 1090, . 305-310. 316-317 305, 314-315 are an economical alternative to screw thread vials for Water's HPLC autosamplers.