Micro sample vials for the HPLC and GC dispenser, usable for most of the standard autosampler. Neck diameter 10.8 mm. Made of polypropylene, milky transparent, self-standing, autoclavable, suitable for deep freezing. The screw-caps can be putted on and removed without tools. They fit on all vessels, also on most of the standard vials. Caps made of PUR: easily to pierce in, closes after the puncture. Caps made of PE: with star for easier piercing.