washing protocols 33 expansion borosilicate clear glass HPLC glass vials washing protocols borosilicate glass HPLC GC vials Clear glass or polypropylene inserts for 9mm HPLC and GC autosampler vials are available in a variety of configurations with usable volumes from 160μL to Aijiren (Hewlett Packard) Autosampler Vials - Scientific Instrument .