Common use clear 2ml vials with caps manufacturer for HPLC Vials Catalogue v10 - Sigma-Aldrich Vials for GC and HPLC 12 x 32mm Vials have wide opening target areas for easy needle penetration Description Pack Size Prod. No. Pack Size Prod. No. 12 x 32mm, Wide opening, crimp top vials and caps Vials 2.0mL, Clear glass, 6.0mm opening, crimp top