Column connectors – Capillary column connectors

Column connectors – Capillary column connectors

Column connectors

When connecting a TD transfer line insert to a GC column, a connector such as a single-use quick-seal capillary connector (QSCC) is required. These are suitable for most routine applications, and are commonly used at the point of install for Markes’ instruments. When working with an MS detector, the use of a SilTite™ mini‑union is recommended.

- QSCCs are easy-to-use, single-use connectors used to interface the transfer line insert provided by Markes to any standard GC column

- Mini-unions are re-usable, and should be used when working with an MS detector to achieve the required baseline

- A column-cutting tool ensures a clean square cut of the transfer line insert and column

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The fused silica transfer line insert provided by Markes International has an inner diameter of 0.25 mm. To rapidly connect to any standard GC capillary column, a single-use QSCC is recommended. The glass push-fit connector makes it easy to install and ensures that the connection is visible.

SilTite mini-unions consist of a reusable nut and ferrule. They are available in varying sizes to suit different column inner diameters, which ensures a more advanced seal than is possible with a QSCC. The advanced seal is only required for instrument setups with an MS detector, where baselines need to be lower.

To ensure an effective seal is achieved with QSCCs and mini-unions, both the transfer line insert and GC column should have a clean square-cut end. Markes recommends a column cutting tool for this, which ensures burr-free square ends and reliable capillary–capillary connections.

For further support, please contact:

COE team

Email: info@transmed.com.vn

Hotline: 0949 934 595