Kinesis KX+ LCGC High-Recovery Screw Top Vials, Amber Glass, 9 . Vials and caps are lot tested by HPLC for cleanliness—certificate of analysis included, complete with chromatogram; Compatible with all autosamplers GC Autosampler Vials. 2.0 mL, Amber glass, 6.0 mm opening, crimp top, silanized Pre-Assembled Screw Top Sampling Vials