HPLC/GC Vials, Caps & Septa 2mL small opening short screw-thread vial with write-on spot, clear 12mL screw-thread vial, clear, borosilicate. 2ml Screw neck ND8 Vials, thread 8-425 Amber vial, 51 Expansion borosilicate glass USP Type I, Class B; Vials provide graduated write-on marking spot area, measures 0.5, 1.0 and 1.5ml