Chromatography Autosampler Vial Caps
Trajan Scientific L-MARK Brand Cap Screw 18mm Headspace PTFE/Silicone 1.5mm, Case of 1000
L-MARK Brand Cap Screw 18mm Headspace 1.5mm Blue PTFE/White Silicone Magnetic 1000/case. Made in the USA.
Analytical Sales & Services 9mm Screw Cap with MSQ PTFE/Silicone Liner
9mm Screw Cap with MSQ PTFE/Silicone Liner
Chemglass Life Sciences Preassembled Closure and Septa, Yellow, 9mm Thread, PTFE/Silicone Septa with Slit
Preassembled Closure and Septa, Yellow, 9mm Thread, PTFE/Silicone Septa with Slit. Pre-assembled closure and septa minimize contamination from handling. They are convenient and available in a variety of colors with your choice of septa.
Microsolv Technology Corporation Caps, Crimp Top, with 0.05'' thick, Silicone Rubber / PTFE, ultra low bleed Septa, fitted in aluminum, Silver Caps. For use with 11mm Crimp or Snap Top, 12x32mm autosampler vials. 100/PK.
Ultra low bleed Septa is a popular choice for GC and when siloxanes from silicone rubber may be a problem but you still want to use PTFE. Also used in HPLC when a Crimp Cap is required.
Microsolv Technology Corporation Caps, Screw Top, Solid, with a Silicone Rubber / PTFE liner, in "knurled", polypropylene, Black Caps. For use with 13-425mm thread,15x45mm autosampler vials. 100/PK.
Turns 4ml, 15x45 autosampler vials into storage bottles. The Silicone Rubber / PTFE liner provides an inert surface with good sealing properties.
Microsolv Technology Corporation Caps, Snap Top, with Red PTFE / White Silicone Rubber / Red PTFE Septa, fitted in smooth, polyethylene, Yellow Caps. For use with 11mm, 12x32mm Snap Top autosampler vials. 1000/CS.
This septa was designed for specific, older instruments such as Agilent 1050 and to provide extra cleaning when "wiping" a needle. Also provides a small degree of better resealing after injection compared to Silicone Rubber / PTFE Septa.
Microsolv Technology Corporation Caps, Crimp Top, with Red Rubber / PTFE Septa, fitted in aluminum, Gold Caps. For use with 11mm Crimp or Snap Top, 12x32mm autosampler vials. 1000/CS.
The Rubber is softer than Natural Red Rubber and provides better sealing after injection. Great for GC.
Microsolv Technology Corporation Caps, Crimp Top, with Red Rubber / PTFE Pre-Slit Septa, fitted in aluminum, Sliver Caps. For use with 11mm Crimp or Snap Top, 12x32mm autosampler vials. 100/PK.
This Pre-Slit Septa is sometimes used in Solid Phase Micro-Extraction (SPME) methods and when 2ml vials are being used.
Microsolv Technology Corporation Caps, Screw Top, with White Silicone Rubber / Natural PTFE Septa, fitted in "knurled", polypropylene, Black Caps. For use with 9-425mm thread, 12x32mm autosampler vials. 1000/CS.
This is our most economical, lowest cost Screw Cap for Autosampler Vials. Natural PTFE is as equally inert and durable as Red PTFE, but no dyes have been added.
Microsolv Technology Corporation Caps, Screw Top, with Beige Silicone Rubber / White PTFE ultra-pure Septa, fitted in "knurled", polypropylene, Blue Caps with 6mm holes. For use with 9-425 thread, 12x32mm autosampler vials. 100/PK.
Larger, 6mm hole in the cap provides a larger target area for autosamplers that might have difficulty and may strike the cap edge of smaller hole caps, during injection.
Microsolv Technology Corporation Caps, Snap Top, with Red Rubber / PTFE Septa, fitted in smooth, polyethylene, Green Caps. For use with 11mm, 12x32mm Snap Top autosampler vials. 100/PK.
Red Rubber / PTFE is often the choice of labs that do not want to analyze with silicone rubber in the Septa and want a lower cost cap.
Microsolv Technology Corporation Caps, Snap Top, with 1.00mm thick, White Silicone Rubber / Red PTFE Pre-Slit (Y Shape) Septa, fitted in smooth, soft polyethylene, Natural Transparent Caps. For use with 11mm, 12x32mm Snap Top autosampler vials. 100/PK.
Soft polyethylene caps are more pliable than other Snap Caps and are easier to place on the vial. Popular choice when using a large number of caps at one time. These caps may not seal as well as other Snap Caps and should be used with sample solvents with low volatility. Y Shape Pre-Slit provides a greater target area for needles and are easier to penetrate. The 1.0mm Septa is thicker than most and offers improved sealing compared with other similar Septa. Pre-Slit Septa are normally recommended for Waters Alliance and Acquity instruments.
Microsolv Technology Corporation Caps, Crimp Top, with White Silicone Rubber / Red PTFE Pre-Slit Septa, Silver Caps, with a 4mm center hole. For use with 8mm Vials. 100/PK.
These aluminum crimp caps are 8mm in diameter with a 4mm center hole and have a Pre-Slit, Ultra-Clean, fitted silicone rubber and PTFE septum that is 1.3mm thick. Use these caps with 8mm Serum Finish, Crimp Top Autosampler Vials. These are Pre-Slit to make it easier for the instrument needle to penetrate the septum and offers reduced resistance. It may not reseal as well as other Non-Slit Septa.
Microsolv Technology Corporation Caps, Snap Top, with Soft-Guard, White Silicone Rubber / Red PTFE Pre-Slit (X Shape) Septa, fitted in smooth, polyethylene, Green Caps. For use with 11mm, 12x32mm Snap Top autosampler vials. 100/PK.
Soft-Guard™ Septa provide easier penetration of autosampler needles and better resealing than other brands, for longer instrument up-time and fewer missed injections. Pre-Slit Septa are normally recommended for Waters Alliance and Acquity instruments. X Shape Pre-Slit provides a greater target area for needles and are easier to penetrate but do not reseal as well as single slit septa.