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9.3 Cleaning the Colorimetric Cell
To determine whether the test cell needs cleaning, perform a check of the sensor voltage when DI water
is present in the cell
If the sensor value is below 8, perform a manual clean of the test cell prior to changing the LED voltage.
To clean the cell, disconnect all tubes connected to the cell, then rotate it as appropriate to ensure any
entry/exit points from the cell can pass through the block without force being applied. Then remove it
from the block.
If the smaller path length cell (16mm) is being used, a collar will be present which holds the cell in the
correct position in the block.
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