Caps, Snap Top, with Silicone Rubber / PTFE Pre-Slit (Y Shape) Septa, fitted in smooth, polyethylene, Natural Transparent Caps. For use with 11mm, 12x32mm Snap Top autosampler vials. MICROSOLV Brand. 100/PK.
Additional Info:
Pre-Slit septa are normally recommended for Waters Alliance instruments.
Y Shape Pre-Slit offers a great target area for injector needles and are easier to penetrate but do not reseal as well as single slit septa.