Caps, Screw Top, with Soft-Guard, White Silicone Rubber / Red PTFE Pre-Slit (X Shape) Septa, fitted in "knurled", polypropylene, Purple Caps. For use with 9-425mm thread, 12x32mm autosampler vials. Soft-Guard Brand. 100/PK
Screw Thread: 9-425mm
Material: polypropylene, cap, silicone/PTFE septa
Features: Cross pre-slit, bonded septa
Soft-Guard cap for easier penetration of autosampler needles and resealing.
Cross slit allows needles to hit the strike target area.
Bonded septa prevents septa from falling out of the cap or into the vial