The 8-425 are standard vials for GC and HPLC and are designed to work in a broad variety of autosamplers requiring narrow neck vials. Vials are preferentially used on instruments from the following manufacturersBeckman, CTC, Gilson, Knauer, glass vials with caps supplier, Spark, Varian, 2ml hplc vials for sale, Hitachi, etc. ˜ 32 x 12 mm, 2ml, screw neck. ˜ St anda rd now eck siz.