2mL 9-425 12*32mm Amber Screw Thread Vial Bottom with Integrated 0.2ml Glass Micro-insert. 100pcs/pk. Description · High quality Schott glass vial for HPLC/GC analysis, amber glass make it compatible for sun-proof samples. - Screw top vial,2 ml,glass 0.2ml insert. Polypropylene vials are translucent and chemically resistant.