eXact Eco-Check Instruction Manual page 7

Ammonia (NH
NH4
1
2
3
4
5
6
7
NOTE: Ammonia compounds react with Chlorine to form monochloramine. This reacts with salicylate to form 5-amino salicylate.
This will oxidize in the presence of sodium nitroprusside to form a green color, directly proportional to Ammonia concentration.
*NOTE: When testing outdoors (sunlight), for best accuracy, use the Mixing Cap/Cell Cover when Zeroing and Reading the sample.
/NH
3
(Ammonia Kit 486654 - Reagent and Strips)
REMOVE STRIP
Remove one (1) eXact
486654-A from the bottle before beginning the test.
Set the strip in a dry, convenient place and recap
the bottle immediately.
TURN METER ON
Press the ZERO/ON button to power the meter on;
the display will show all annunciators, then the
current MENU selection, followed by the last
reading.
SELECT TEST: NH4
Press and re-press the MENU button until the
display shows the parameter NH4.
RINSE/FILL CELL & ADD REAGENT
Rinse the CELL at least 3 times with the water sample
you will be testing - rinsing minimizes the potential for
to capacity with the water sample. Add 3 drops of eXact
Reagent NH
Water Analysis, add 10 drops.
ZERO METER*
Press the ZERO/ON button. The cursor will move
across the display followed by 0.00 PPM. Sample
is ready for testing.
DIP STRIP AND PRESS "READ"
Dip the eXact
into the CELL and immediately press READ. This
starts the 20 SECOND countdown timer. During
this time move the strip in a gentle back and forth
motion (approx. 2 strokes/sec). Remove and
discard the strip after "1" on the display
disappears*. The meter will automatically start to
count up for 500 seconds.
RECORD RESULT DISPLAYED
After the 500 seconds, the cursor will move across the
display while the meter prepares to measure the
sample. Record result displayed as NH
(this result is automatically stored in NH4 Menu). After
testing, rinse cell and clean with brush.
) Test Procedure
+
4
®
, Part No. 486654-B to the CELL. For Salt
3
®
Strip Micro NH
7
NH
Strip Micro NH
, Part No. 486654-A
3
concentration
3
3
, Part No.
3
®