China different shape 250ul micro volume glass insert for Shimadzu Shimadzu™ GC - Shimadzu™ | Sigma-Aldrich 29116-U: Vials, open-top screw cap, 2 mL large opening with closures, unassembled convenience packs volume 2 mL, clear glass vial, thread for 10-425, black polypropylene cap, PTFE/rubber septa, pkg of × 100 ea