User Guide

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• Remove the cuvet.
• Add 4 drops of the First reagent
(6 drops in case of seawater
analysis). Replace the cap and
mix the solution.
• Add 4 drops of the Second
reagent (10 drops in case of
seawater analysis). Replace the
cap and mix the solution.
• Reinsert the cuvet into the instrument.
• Press TIMER and the display will show the countdown prior to the
measurement or, alternatively, wait for 3 minutes and 30 seconds
and press READ DIRECT. In both cases “SIP” will blink during
measurement.
• The instrument directly displays concentration in mg/L of ammonia
nitrogen (NH
3
-N) on the display.
• To convert the reading to mg/L of ammonia (NH
3
), multiply the
display by a factor of 1.216.
INTERFERENCES
Interference may be caused by:
acetone, alcohols, aldehydes, glycine, hardness above 1 g/L, iron,
organic chloramines, sulfide, various aliphatic and aromatic amines.
Ammonia LR
x 4
x 4