Caps, Screw Top, Solid, with an ultra-clean, Silicone Rubber / PTFE liner, in "knurled", closed Blue Caps. For use with 9-425mm thread,12x32mm autosampler vials. MICROSOLV Brand 100/PK.
Additional Info:
The 9502S‑09‑SP screw caps are a specialty, solid‑top storage solution designed to convert standard 9‑425 autosampler vials into secure storage vials rather than injection vials. These caps do not contain a pierceable septa and are not intended for autosampler injection.
Instead of a septum, these caps use an ultra‑clean PTFE liner backed with silicone rubber. The PTFE layer provides chemical inertness on the sample‑contact surface, while the silicone rubber backing applies elastic compression against the vial rim. This combination delivers a significantly better seal than PTFE‑only liners, particularly for volatile compounds, aggressive solvents, and long‑term sample storage.
The solid, closed‑top design eliminates needle penetration points entirely, reducing the risk of evaporation, solvent loss, or atmospheric exchange during storage or transport.
These caps are matched for proper fit and sealing performance with MICROSOLV™, AQ™, and RSA™ brand autosampler vials, ensuring consistent compatibility across multiple vial product lines.
The knurled polypropylene exterior allows secure manual handling and reliable torque application, making these caps suitable for routine laboratory storage workflows.
This product is intended for laboratories that require sealed storage using autosampler vials, particularly for volatile or solvent‑rich samples where standard septa caps are inappropriate.