Hach TU5400 sc Basic User Manual page 20

4.10.2 Set the flow rate
1. Measure the flow with the flow regulator fully open. Make sure that the flow is in the middle of the
flow specification. Refer to
2. Slowly close the flow regulator until the flow decreases by 20 to 30%.
Note: The flow regulator causes back pressure in the tubing and decreases the quantity of bubbles that can
form in the vial.
20 English
Specifications on page 3.