100pcs 2ml Lab Autosampler Vials HPLC GC Amber Glass Bottle 9-425 PTFE Screw Cap. Low Expansion Coefficient - 9mm Screw Thread Autosampler Vials are made of Analab - NUI Galway 193, 189, Kinesis HPLC/GC Certified Vial Kit : Short Thread Vial Clear Label 256, 252, Kinesis 2mL Snap Ring Vial 32 x 11.6mm Amber Glass Wide Opening