Chromatography Autosampler Vial Caps
Chromatography autosampler vial caps are critical for maintaining sample integrity and ensuring leak-tight performance in high-throughput LC, UHPLC, and GC workflows. This curated assortment of cap-only products spans crimp, screw and snap formats, including magnetic closures for popular autosamplers. Choose from aluminum and polymer caps with a wide range of septa chemistries to support volatile solvents, aggressive eluents, and low-bleed detection requirements.
Useful Links
Save Now - Exclusive Deals
Product Code 10132422
Product Code 11793127
Product Code 11797567
Product Code 17334043
Product Code 11737577
Product Code 11742458
Product Code 10729454
Product Code 10759644
Product Code 17333923
Product Code 11792428
Product Code 11823861
Product Code 11772418
Must Have
Product Code 17374053
Product Code 10541013
Product Code 11778246
Product Code 15239468
Product Code 11797617
Product Code 11772438
Product Code 17314053
Product Code 11894960
Product Code 11722438
Product Code 11707607
Product Code 11814990
Product Code 17344043
Product Code 11863021
FAQ
Chromatography autosampler vial caps provide a secure, leak-tight seal between the sample vial and autosampler needle. Caps help protect samples from evaporation and contamination, while specific septa materials support LC, UHPLC, and GC methods from Fisherbrand, Thermo Scientific, Macherey Nagel, Wheaton, and Duran vials.
Cap format is usually defined by the vial and instrument. Screw caps are convenient and reclosable, crimp caps offer very tight seals for volatile solvents, and snap caps simplify handling. Check your autosampler manual and choose compatible caps from Fisherbrand, Thermo Scientific, Macherey Nagel, Wheaton or Duran.
Septa materials determine chemical resistance, bleed level, and resealing ability. Silicone/PTFE combinations are widely used for LC, while butyl and PTFE-lined butyl support many GC methods. Low-bleed formulations from major brands help minimize background and ghost peaks in sensitive MS detection.
Many modern GC autosamplers use magnetic crimp or screw caps to ensure reliable vial transport and positioning. Magnetic aluminum or steel caps from Fisherbrand and Thermo Scientific provide secure handling, consistent penetration and robust sealing, supporting automated, high-throughput GC workflows.
Compatibility is typically defined by mouth type, diameter and thread. Use the chromatography autosampler vial caps only category to filter by brand and format, then match cap dimensions to your vials from Fisherbrand, Thermo Scientific, Macherey Nagel, Wheaton or Duran using product specifications.
Top Brands
