TIP
With the dual pump, test each static mixer separately.
When
If you observe pressure pulsation, inconstant pressure, or high backpressure at the column and pump
Additional items required
Water as solvent
Tissue
Follow these steps
NOTICE
Turning the static mixer in the mounting bracket when loosening or tightening capillaries can damage the mounting bracket.
Disconnect the capillary on the outlet of the static mixer.
To absorb liquid leaving the static mixer, place the tissue on the mixer outlet.
Apply a flow of 2 mL/min using water.
Observe the pump pressure.
Depends on the pressure reading:
Pressure Reading | Action |
---|---|
Pressure is less than 0.8 MPa | Continue with the next step. |
Pressure is 0.8 MPa or higher | Replace the static mixer. |
Reconnect the capillary to the outlet of the static mixer.
Test the pump for leakage. See Testing the Pump for Leakage (General Test).