Caps, Snap Top, with 0.04" thick, White Silicone Rubber / Natural PTFE Septa, fitted in smooth, polyethylene, Black Caps. For use with 11mm, 12x32mm Snap Top autosampler vials. BASIK Brand. 1000/CS.
Natural PTFE is very pure and does not have dyes that could extract from it.
Our most economical Silicone Rubber / PTFE Snap Cap. Click HERE for smaller pack quantities.