1.5mL Clear Screw Neck vial,8-425 Thread,11.6*32mm application in liquid chromatography, Gas chromatography, and Mass spectrometry. Aijiren screw thread top sample vial design is characterized by universal ease of use, especially the use of automated sample introduction systems, so this type of vial is also called an autosampler vial. And this sample vial is extremely compatible. The 1.5ml sample vial we usually say is the 2ml volume sample vial.