Deactivated Clear Glass 12 x 32 mm Screw Neck Vial, Total Recovery, with Cap and Preslit PTFE/Silicone Septum, 1 mL Volume, 100/pk. Use the Deactivated Clear Glass 12 x 32 mm Screw Neck Vial to safely store polar analytes such as phenols, proteins, antibodies, amines, metabolites, herbicides, and pesticides.