Headspace-Vial, ND20, 5 ml volume, 38 x 20 mm, clear glass, crimp neck, flat bottom, 100 pieces in re-sealable PP Box The identification of the suitable consumable for a certain instrument is especially in headspace extremely difficult. The compatibility chart will help you to find the suitable vial for your instrument in the upper part, the appropriate (recommended) closures can be found in