WISP 48 Screw-Thread Caps and Red PTFE/Silicone Septa, 4.0 mL, Preassembled, 1000-pk.

Choose preslit caps (available for some vials) to reduce the risk of needle bending, release vacuum from high-volume injections, and improve injection reproducibility when greater than 20% of vial volume is withdrawn.

Features & Benefits