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To compensate the meter for the sample turbidity or color, the measurement takes place in two
phases. First, the meter is zeroed using the unreacted sample. After the reagents are added the
reacted sample is measured.
Important note:
Free and Total Chlorine have to be measured separately with fresh unreacted
samples if both values are requested.
MEASUREMENT PROCEDURE
FREE CHLORINE MEASUREMENT
• Fill the cuvette up to the 10 mL mark with unreacted sample and replace the cap.
• Place the cuvette into the holder and ensure that the notch on the cap is positioned securely
into the groove.
• Press
ZERO/CFM
and the lamp, cuvette and detector icons will appear on the display, depending
on the measurement phase.
• After a few seconds, the display will show
“-0.0-”
. The meter is now zeroed and ready for
measurement.