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