Using a beveled finish vial reduced the amount of sealing surface between the crimp seal and the glass surface
A flat bottom might be necessary when vials have to run within the instrument on a slightly downwards tendency and preferred for manual headspace autosamplers
UltraClean Liners for sensitive analysis,it is mostly used for Chromatography analysis,including food &drug safety,and environmental testing )water & soil)
20mm aluminum crimp headspace,Temperature resistant from -60 °C up to 200 °C