Phenomenex Vial Part: Verex Vial Kit, 9mm, 2mL Screw top Verex HPLC, GC, and autosampler vials offer the lowest ion content possible to reduce sample loss and contamination. From start to finish, Verex HPLC, GC, and autosampler vial and cap products are manufactured to provide high quality, state-of-the-art solutions for your most challenging, sensitive applications.