Caps, Screw Top, Solid, with a Red Butyl Rubber/ Grey PTFE liner, in "knurled", polypropylene, Black Caps. For use with 13-425mm thread,15x45mm autosampler vials. MicroSolv Brand. 100/PK.
Economical Cap turns 15x45mm, 4ml autosampler vials into storage bottles. Butyl Rubber / PTFE liner provides a good inert closure with adequate re-sealing properties.