2ml clear vials with caps for sale--Lab Vials Manufacturer. Fits most 2.0 mL, .6 x 32 mm vials (vials sold separately). 2ml 0mm hplc vials rack for sale 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 materials.