Vial, 2.0mL, Clear with White Grad Spot, Snap Seal™, 12x32mm, 11mm Snap Seal. The Snap Seal™ vial can be securely sealed with the patented Poly Crimp™ Seal, aluminum seal or variety of Chem Snap Cap™ designs. The Snap Seal™ vial incorporates the unique Step Vial design that precisely centers a limited volume insert in the vial neck. This certifies dependable, reliable use with autosamplers, even those with robotic arms.