Kit with vial and cap + septum, consisting of 20 ml headspace vial, 20 mm crimp neck, DIN-, long neck, clear 1st hydrol. Class glass, round bottom, 75.5 x 22.5 mm; silver/red Bi-metal magnetic-cap, 20 mm crimp top, with 8 mm center hole; septum blue / transparent silicone / PTFE, 45° shore A, 3 mm thickness, UltraClean