2ml HPLC Vial, Autosampler Vial, Alberts Filter Clear Lab Vial, Sample Vial with Writing Area, 9-425 Screw-Thread Vial, Blue Screw Cap with Hole, Red PTFE & White Silicone Septa 100 Pack Description. HIGH-QUALITY VIAL - Clear vials made of low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements.