Caps, Screw Top, with Silicone Rubber / PTFE, ultra-pure Septa, fitted in "knurled", polypropylene, Light Blue Caps. For use with 9-425mm thread, 12x32mm autosampler vials. AQR Brand. 100/PK.
AQR™ brand screw and snap caps are designed for high‑purity chromatography applications where extractables, background interference, and sealing consistency are critical. These caps are engineered for direct compatibility with RSA™ autosampler vials and are commonly used in HPLC, LC‑MS, GC, and GC‑MS workflows.
Manufactured under tightly controlled conditions, AQR™ caps and septa deliver consistent pierceability, reliable resealing, and exceptionally low extractable levels. Their ultra‑clean composition helps minimize background noise and extraneous peaks, supporting accurate data acquisition when working with trace‑level and low‑abundance analytes.
AQR™ caps are free from siloxane contamination and are particularly well suited for mass‑spectrometry‑sensitive methods. Conformance certificates are available upon request, supporting traceability, method validation, and regulatory compliance where documentation is required.
This subcategory includes screw and snap cap formats designed to match vial thread geometry, sealing force, and autosampler requirements. Selection of the appropriate cap and septum configuration is essential for maintaining sample integrity and achieving reproducible chromatographic performance.
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