2ml Clear HPLC Screw Vials with Blue Caps for Sale--Lab . 2ml Clear HPLC Screw Vials are preferentially used on instruments of the following manufacturers: Jasco, Perkin Elmer, Shimadzu, Varian, Waters, etc., or General Storage. Factory Directly Supply 2ml Clear HPLC Screw Vials over 15 Years Exporting. Autosampler vials-Aijiren Vials for HPLC/GC