The 9mm screw top vials with cap and septa is compatible with autosamplers using 11mm crimp top vials,Wide mouth,Borosilicate glass,Flat bottom,With marking spot,Cap with teflon/silicon/teflon septa,Cap to be packed separately from vials. Features. 1. Short screw Thread ND9 vials(11.6*32mm) for GC and HPLC. 2. Available with black or blue and