Our screw-top 2ml HPLC vials and screw caps are the perfect fit for HPLC and GC instrument platforms across a wide variety of applications, including pharmaceutical, environmental, energy and fuels, forensics, materials science, biopharmaceutical, proteomics, and metabolomics. Vial Volume: 1.5-2.0ml Vial Thread: Screw Cap: Plastic open/solid cap