Caps, Screw Top, Solid, with a Silicone Rubber / PTFE liner, in "knurled", polypropylene, Black Caps. For use with 13-425mm thread,15x45mm autosampler vials. MicroSolv Brand 100/PK.
Turns 4ml, 15x45 autosampler vials into storage bottles. The Silicone Rubber / PTFE liner provides an inert surface with good sealing properties.