Screw 9mm (N9) HPLC Vial, Cap, Septa and Inserts 9mm 2mL HPLC Vial without Write-on Spot aijiren Tech 11mm Autosampler Inserts 200µL Conical aijiren Tech™ National 11mm Autosampler Vial inserts are made of clear glass or polypropylene and available in a variety of configurations for use with HPLC or GC autosampler vials.