V conical micro-vial for laboratory chromatography experiment, the micro-vial size is 11.6x32mm. There are screw top micro-vial and crimp finished micro-vial to choose. · High quality glass vial for HPLC/GC analysis. · 0.3 ml clear glass micro insert fixed in 2ml glass vial. · Conical base insert vial can saving samples while during injection.