Ferrules and Unions
SEPARATION - Connections
Ferrules are available in a variety of different materials, shapes and sizes depending on their use, the instrument and the size of the capillary column being used. Probably the most important but difficult aspect of choosing a ferrule is the selection of the material type. The table below will help you choose the appropriate ferrule material for your application.
When choosing ferrules ensure you consider the following:
1) The material that best suits your application.
2) The connection type you want.
The following selection table will assist with your decision.
|Graphite||Graphite Vespel®||SilTiteTM Metal|
||MS interfaces, although even with a good seal will leak air compared to SilTiteTM ferrules.||Ideal for MS interfaces due to leak free seal.|
|Not Suitable For||Connecting columns to mass spectrometers, as porous to oxygen.||High temperature applications.|
||If not re-tightened after installation and temperature cycles of the GC, air may enter the column or detector decreasing sensitivity of the analysis and possibly degrading the column as well as components of the system.||Over-tightening of the seal can introduce leaks into the system. Follow the recommended installation instructions to avoid this problem.|
|Upper limit of 450 °C||Upper limit of 325 °C||No temperature limit in GC use.|
|Metal||SilTiteTM 0.25 mm ID Column||10||221-72563-04|
|SilTiteTM 0.32 mm ID Column||10||221-72563-05|
|SilTiteTM 0.53 mm ID Column||10||221-72563-08|
|SilTiteTM 1/32" ID Column||10||221-75200-04|
|SilTiteTM Kit 10/32" 0.25 mm ID Column||1||221-75200|
|SilTiteTM Kit 10/32" 0.32 mm ID Column||1||221-75200-01|
|SilTiteTM Kit 10/32" 0.53 mm ID Column||1||221-75200-02|
|SilTiteTM Kit 1/32" ID Column||1||221-75200-03|
|SilTiteTM Nut 10/32" 0.8 mm ID Column||5||221-75186|
For Research Use Only. Not for use in diagnostic procedures.
This page may contain references to products that are not available in your country.
Please contact us to check the availability of these products in your country.