Hach DR300 Service Manual page 33

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Step Description
10
Insert the NG11 filter into the cell holder. Make
sure to install the filter in the correct orientation.
Install the instrument cup.
Note: The filter is light-tight. Therefore, it is not
necessary to install the instrument cap.
Push
to measure the absorbance.
Make a note of the measured value of the
NG11 filter and enter the actual value in the
Certificate of Service Inspection.
11
Insert the NG5 filter into the cell holder. Make
sure to install the filter in the correct orientation.
Install the instrument cup.
Note: The filter is light-tight. Therefore, it is not
necessary to install the instrument cap.
Push
to measure the absorbance.
Make a note of the measured value of the
NG5 filter and enter the actual value in the
Certificate of Service Inspection.
Picture
Inspection
31

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