1 4
• Remove the cuvet.
• Add the content of one packet of
HI 93707-0
Nitrite Low Range reagent.
Replace the cap and shake gently for 15
seconds.
• Replace the cuvet into the cuvet holder
and ensure that the notch on the cap is
positioned securely into the groove.
• Press and hold
READ/ /TIMER
for three
seconds. The display will show the
countdown prior to measurement. The
beeper is playing a beep at the end of
countdown period.
Alternatively, wait for 15 minutes and
just press
READ/ /TIMER
.
In both cases, the lamp, cuvet and detector
icons will appear on the display,
depending on the measurement phase.
• At the end of measurement, the instrument
directly displays concentration in mg/L of
nitrogen-nitrite (NO
2
-
-N) on the LCD.
• To convert the NO
2
-
-N concentration to
the nitrite ion concentration (NO
2
-
),
multiply the reading by factor of 3.29.
• To convert the NO
2
-
-N concentration to
sodium nitrite concentration (NaNO
2
),
multiply the reading by factor of 4.93.