Caps, Screw Top, with Silicone Rubber / PTFE Septa, fitted in smooth sided, Robo Style, soft polypropylene, Blue Caps. For use with 9-425mm thread, 12x32mm autosampler vials. BASIK Brand. 1000/CS.
Additional Info:
The 9502S‑05‑B‑M screw caps are the case‑quantity version of one of our most popular standard autosampler caps, widely adopted for routine chromatography and automated laboratory workflows. The smooth‑sided Robo‑Style design is specifically suited for robotic handling systems, autosampler capper/decapper devices, and high‑throughput automation, where knurled caps are unnecessary or undesirable.
Each cap is fitted with silicone rubber / PTFE septa, providing chemical inertness, consistent sealing, and reliable needle penetration for routine HPLC, GC, and LC‑MS applications. The PTFE layer prevents direct sample contact with the silicone, while the silicone rubber core supports effective resealing after injection.
Manufactured from soft polypropylene, these Robo‑Style caps allow controlled torque application and smooth mechanical interaction with automated equipment, helping reduce wear on tooling while maintaining a secure seal on standard 9‑425 autosampler vials.
These caps are commonly selected as a cost‑effective, high‑volume alternative to National / Thermo DP™ screw caps, offering similar fit and automation compatibility at a lower overall cost.
This 1000‑count case format is ideal for laboratories running continuous autosampler sequences or automated sample preparation systems.