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• Wait for a few seconds and the display
will show “-0.0-”. Now the meter is
zeroed and ready for measurement.
• Remove the cuvet.
• Add the content of one packet
of HI 93721-0 Iron High
Range Reagent. Replace the
cap and shake until
dissolution is complete.
• Replace the cuvet into the holder and
ensure that the notch on the cap is
positioned securely into the groove.
• Press TIMER and the display will show the countdown prior to
measurement. Alternatively, wait for 3 minute and press READ
DIRECT. In both cases “SIP” will blink during measurement.
Note: for the majority of samples a reading may be taken already
after 1 minute, because color development in the sample is in
general very fast (full color development within 1 minute).
• The instrument directly displays concentration in mg/L of iron on
the Liquid Crystal Display.
INTERFERENCES
Copper does not interfere: reagent contains a masking agent.
Iron
