网页2022/09/19 · Home » News » 20ml screw headpace vials » Professional 18mm thread gc glass vials for GC/MS VWR Professional 18mm thread gc glass vials for GC/MS VWR Material: USP Type 1, Class A, 33 Borosilicate Glass Dimensions: 22.5 x 46mm/22.5 x 75mm Application: GC system Neck Diameter: 18mm Qty/Pack: 100pcs/pack Volume: 10