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Figure E–8: Common configuration of the diverter valve operating in loop injection mode
Valve position 1 - Load sample
Valve position 2 - Inject sample
Loop
From LC (red PEEK tubing, 0.005-inch internal diameter)
To QDa (red probe assembly, 250 mm)
Excess sample to waste (blue PEEK tubing, 0.01-inch internal diameter)
Loop injection port
See also:
•
Diverter valve tubing considerations
•
Operating the ACQUITY diverter valve
E.2.3.1 Diverter valve tubing considerations
Where an optical detector such as a PDA or TUV is configured in-line with the ACQUITY QDa
Detector and an ACQUITY Diverter Valve, it is important to consider the system flow rate, due to
the maximum recommended pressure limit of the flow cell.
Typically, the maximum flow rate for the QDa is 2 mL/min. However, the following table describes
the maximum recommended flow rates for system configurations that include an in-line optical
detector.
June 15, 2017, 715003956 Rev. F
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