9-425 chromatography glass vials caps and closures prepare HPLC sample vials ca. 20mL Amber, Crimp Neck Headspace Vial, ND20 Flat Bottom, 22.5 Crimp Top Aijiren Sample Vials for GC for Sale-News Aijiren is a manufacturer of HPLC Vials,GC Vials,Sample Vials,COD Test Tube,EPA Sample Storage Vial since 2007.