Which Column Coupler do You Recommend for Pairing HPLC Columns with Guard Columns- Tech Information
Date: 9-MAY-2023 Last Updaed: 8-NOVEMBER-2025
The ARE-Applied Research™ brand of column couplers are used to connect the flow of two HPLC columns or a guard column and an analytical column directly in series.
Below is our recommended selection chart to match your flow rate and a suggested union-column coupler (ID). The ID of the coupler should be determined based on your application, where the faster the flow, the larger the bore (ID) is needed.
The ARE-Applied Research™ brand of column couplers are used to connect the flow of two HPLC columns or a guard column and an analytical column directly in series.
Below is our recommended selection chart to match your flow rate and a suggested union-column coupler (ID). The ID of the coupler should be determined based on your application, where the faster the flow, the larger the bore (ID) is needed.
|
Flow rate
(milliliters / minute) |
Through Hole
(mm) |
Through Hole (inch) |
Column Coupler
Cat. No. |
| up to 0.5 | 0.13 | 0.005 | 47450-01 |
| ≤1.0 | 0.18 | 0.007 | 47450-02 |
| 1.0 - 2.0 | 0.25 | 0.010 | 47450-03 |
| ≥2.0 | 0.50 | 0.020 | 47450-04 |