Column Connectors
Column Connectors
Column connectors are used:
- To connect a guard column or retention gap:
A short capillary column (ca. 2 m) with no stationary phase can be connected to the head of the analytical capillary column in order to protect the column or focus the sample, respectively
- For true on-column injection:
Any capillary columns can be used by connecting a short wide-bore capillary column to the inlet of the column
- To connect broken capillary columns
- To connect 2 columns
To ensure a correct connection, it is necessary to cut the ends of capillary columns properly.
Shimadzu offers two types of column connectors:
Glass-Lined Stainless-Steel Joint
This is a compact stainless-steel joint to connect capillary columns. The glass lining minimizes adsorption of sample components.
| P/N | Capillary OD [mm] | Description | |
|---|---|---|---|
| 670-11424-11 | 0.4 | Mini-union (with 5 pcs graphite ferrules) |
 |
| 670-11424-12 | 0.5 | ||
| 670-11424-13 | 0.8 | ||
| 670-11424-21 | 0.4 - 0.5 | Graphite Ferrule (10 pcs) |
 |
| 670-11424-22 | 0.8 |
For most fused silica capillary columns: 0.4 mm OD = 0.10 - 0.25 mm ID; 0.5 mm OD = 0.32 mm ID; 0.8 mm OD = 0.53 mm ID.
Stainless Steel Joint
This is a compact stainless-steel joint to connect capillary columns.
| P/N | Description | |
|---|---|---|
| 225-19057 |
Union connector 1/16 with joint and both side’s nuts; male-female; with 2 ferrules (Graphite) 0.5 mm bore |
 |
Press-Tight Connector
This connector enables an easy connection without the need of ferrules. When the columns are coated with polyimide resin, the connection will remain tight and leak-free for longer.
For capillary columns with 0.35 - 0.8 mm OD (usually 0.1 - 0.53 mm ID).
| P/N | Description |
|---|---|
| 221-38102-91 | Press-Tight Connector (5 pcs) |
| 221-38102-92 | Press-Tight Connector (5 pcs with 5 g polyimide resin) |