The standard screw thread clear vial has a narrow opening that allows use of 8-425mm closures and septa. It is designed to work in a variety of autosamplers requiring narrow neck vials. Standard opening screw thread vials are made up of Type I borosilicate glass. It has a volume of 2mL. The vial has a 12mm diameter and 32mm height. It is clear. This vial has graduated marking spots which can be written on with a #2 pencil. JG Finneran® #: 32008M-1232.