GC Column Connectors

• Connect a capillary column with a pre-column.
• Connect capillary columns of different polarities.
• Connect capillary columns to increase length.
• Repair a broken capillary column.

How to Correctly Use a Press-Tight Connector

If you've ever attached a guard column, connected two columns together, or repaired a broken column, you know how essential it is to have a clean, reliable connection.  In this Restek tip, they show you how to ensure a quality connection using a Press-Tight connector.

CHROMSPEC^™ Connectors

Capillary GC column connectors are often used to join guard columns to analytical columns, to connect two columns together, or to repair a broken column.

Restek Universal Press-Tight Connectors

Universal unions offer the greatest versatility as you can connect any common fused silica tubing sizes together.

    

Restek’s Vu2 Union Connector

Combine the simplicity of a Press-Tight union with the strength of a metal union.

How does a Vu2 Union connector work?
A Press-Tight union in the Vu2 Union connector joins the fused silica tubing ends together; the ferrule and knurled nut at each end of the connector hold the tubing in place via a secondary seal between the ferrule and the Press-Tight union. Each knurled nut applies independent pressure to each ferrule to make leak-tight seals with the column ends. These ultra-strong connections will not unexpectedly disconnect under temperature changes, vibrations, or other stresses normally encountered in GC analyses. The open design allows visual confirmation of the seal between the column and the Press-Tight union to ensure confidence in the connection. Hang the connector
from the column cage to minimize stress on the connections.

Who will benefit from using Vu2 Union connectors?
Any analyst using guard columns, transfer lines, or restrictor tubing; performing a dual-column analysis with columns connected in series;
or seeking to repair a broken column will find Vu2 Union connectors the simple, reliable, easy-to-use solution to their connection needs.

Kits include: Vu2 Union body, two knurled nuts, two Press-Tight unions, and four ferrules.

Note: This product is not recommended for GC column-to-MS connections.

   

Restek SeCure "Y" Connector 

Combine the simplicity of a "Y" Press-Tight connector with the strength of a metal union. The ferrules and knurled nuts hold the fused silica tubing in place, which prevents the tubing from unexpectedly disconnecting, even at temperatures as high as 400°C.

Kits include: SeCure "Y" connector body, three knurled nuts, universal "Y" Press-Tight union, and three ferrules.

   

Restek MXT Metal or Fused Silica Column Connector

Rugged MXT Low Dead Volume Connectors are Siltek treated to make them inert to active compounds. They can be used at temperatures up to 430°C without degrading the deactivated layer, and their low thermal mass tracks rapid oven temperature programming. Kits are available for 0.28 mm, 0.32 mm, and 0.53 mm ID columns in a standard configuration for column-to-column connections and a “Y” configuration for connecting two columns to one inlet or one column to two detectors. Rugged, inert MXT Low Dead Volume Connectors let you install MXT columns, guard columns, and transfer lines with confidence, ensuring an inert flow path that preserves analyte integrity.

   

Trajan SilTite^® µ-Union

Your chromatography analysis does not end with the selection of the GC column. The combination of components selected for your instrument also make an important contribution to successful separations. We bring technology and chromatography expertise to improve your chromatography. They manufacture an array of connection types for GC use. Poorly defined or selected connections can lead to an increase in dead volume, leaks from cycled temperatures and mismatched tubing sizes. SilTite™ μ-Unions are specifically designed and precision engineered for use in capillary GC. 

• Inert – Enabled by our expertise in surface chemistry, features chemically deactivated stainless steel ferrules alleviating active sites.
• Zero Dead Volume – Giving you optimized peak shapes. 
• Robust – Stable for both extreme temperature and pressure cycling.
• FingerTite Technology – Ensures it’s easy to install and leak free. 
• SiiTite™ Ferrules – No more leaks and no need to re-tighten after installation. 
• Only 9 mm in total length and a mass of <0.5 g – Low thermal mass. 

Still Have Questions?

You can give us a call or email us and we can find the right Column Connectors for your application. It's our pleasure to help you and it's free!

1-800-267-8103 or tech@chromspec.com