clear and amber glass. used for injection of very low volume samples. it is not neccesary to use inserts. crimp (and snap type) and screw (8, 9,10-425 neck) vials, septa with diameter 8 mm, 9 mm, 10 mm for 1.5 ml vials. and 13 mm septa for 3.5 ml vials. champagne vialks – residual volume 15 μl (for 1.5 ml vials)