58
METHOD PROCEDURES
58
58
NITRATE
• Remove the cuvette and add one packet of HI93728-0 Nitrate
Reagent.
• Replace the plastic stopper and the cap. Shake vigorously up and
down for exactly 10 seconds. Continue to mix by inverting the
cuvette gently for 50 seconds, while taking care not to induce air
bubbles. Powder will not completely dissolve.
Note: The method is technique sensitive. See procedure described
in CUVETTE PREPARATION section for proper mixing technique.
• Insert the cuvette into the holder and close the lid.
• Press Timer and the display will show the countdown prior to the measurement or wait 4 minutes
and 30 seconds and press Read. When the timer ends the meter will perform the reading. The
instrument displays the results in mg/L of nitrate-nitrogen (NO
3
-N).
• Press the or key to access the second level functions.
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