Caps, Screw Top, with Silicone Rubber / PTFE Septa fitted in "knurled", polypropylene, Black Caps. For use with 10-425mm thread, 12x32mm wide mouth autosampler vials. Compare to Shimadzu Caps. BASIK Brand. 100/PK
Flange at the bottom of the Cap allows for the vial and cap to be suspended in older Shimadzu autosamplers.
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