网页Screw cap are available in 8-425 screw cap, 9mm screw cap, 10-425 cap, 13-425 cap and 24-400 cap. 8-425 screw cap for HPLC vial The classification of HPLC autosampler vials is generally done based on the diameter of the vial body, vial height, and thread finish.Our 2ml Screw HPLC Vials are the perfect fit for HPLC and GC instrument platforms across a