Aqualytic CHECKIT Comparator Instruction Manual page 5

ë Allow 2 minutes time for complete sediment of
NITRATE-Test Powder.
í Fill one cell carefully to the 10 ml mark with the clear
solution of the Test Tube.
ì Add one NITRITE-LR Tablet to this cell, crush it and mix
it with a clean stirring rod.
î Wait 10 Minutes for complete colour reaction.
ï Place this cell in the right-hand compartement of the
comparator. Fill a second cell to the the 10 ml mark and
place it in the left-hand compartement of the comparator.
Match the two colour fields against north day light and
read off the result as mg/l N.
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