Which column coupler do you recommend for pairing HPLC columns with guard columns- Tech Information
May 9, 2023
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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.
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 |