(31) Caps may be snapped on and off by hand which eliminates the need for metal crimping and decapping tools, thus reducing potential hazards due to sharp aluminum metal edges. Large opening top provides greater target area for needle penetration.
(5) GC Snap Top Caps were developed to handle the most volatile samples, providing a liquid airtight seal to the vial. Simply snap on the cap and an evaporation proof seal of a crimp cap is achieved. Caps can also be used on 12x32 mm Snap Seal™ vials.