Vials are of high quality Original manual vial crimper wholesales 4ml WISP autosampler vial type. 4ml vials are compatible with 13-425 screw thread closures. HPLC / GC Compatible – manual vial crimper wholesales TM, manual vial crimper price technologies, Shimadzu, Perkin Elmer, Thermo, Jasco etc. Vials Quality – USP type 1 class A, 33 Expansion or 51 Expansion.