2021/8/5 · Iso9001 hplc vial caps for hplc sampling-Aijiren Vials Iso9001 clear laboratory vials with patch for HPLC. HPLC & Chromatography Vials,Clear,Vial ColorClear Chromatography vials are containers designed to temporarily hold samples analyzed as a part of gas (GC) or liquid (HPLC) chromatography.