LaMotte Dissolved Oxygen Water Quality - Manual (Page 9)

TEST PROCEDURE
7
NOTE:
If the plunger ring reaches the bottom line on the scale (10 ppm)
before the endpoint color change occurs, refill the Titrator and
continue the titration. Include the value of the original amount
of reagent dispensed (10 ppm) when recording the test result.
When testing is complete, discard titrating
solution in Titrator. Rinse Titrator and titration
tube thoroughly. DO NOT remove plunger or
adapter tip.
NOTE:
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1.0