18
TOTAL CHLORINE MEASUREMENT
• Fill the cuvette up to the mark with 10
mL of unreacted sample and replace the
cap.
• Place the cuvette into the holder and
ensure that the notch on the cap is posi-
tioned 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.
• Remove the cuvette and add one packet
of
HI 93711-0
reagent. Replace the cap
and shake gently for 20 seconds (or
2 minutes in case of seawater analysis).
• Replace the cuvette into the cuvette holder
and ensure that the notch on the cap is
positioned securely into the groove.
•
Press and hold
READ/ /TIMER
for three
seconds.
The display will show the
countdown prior to measurement. An
audible “beep” indicates the end of the
countdown period.