JG Finneran 13-425 mm Black, Polypropylene Open Hole Cap, 10 x 100 pc/PAK

Available in a wide assortment of colors. Designed for use with all autosamplers. The TopSeal™ closure with a 10mil molded septa allows for easy needle penetration and is inert to most solvents. The one-piece design saves time by eliminating the process of assembling liners in the closures.