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51
SPECIFICATIONS
Range
0.00 to 0.35 mg/L
Resolution
0.01 mg/L
Accuracy
±0.02 mg/L ±4% of reading
Typical EMC
±0.01 mg/L
Deviation
Light Source
Tungsten lamp with narrow band interference filter @ 525 nm
Method
Adaptation of the
EPA Diazotization method 354.1. The reaction between nitrite and
the reagent causes a pink tint in the sample.
REQUIRED REAGENTS
Code
Description
Quantity
HI 93707-0
Powder reagent
1 packet
REAGENT SETS
HI 93707-01
Reagents for 100 tests
HI 93707-03
Reagents for 300 tests
For other accessories see page 73.
MEASUREMENT PROCEDURE
• Select the
Nitrite LR method using the procedure described
in the
Method Selection section (see page 12).
• Fill the cuvette up to the mark with 10 mL of unreacted
sample (up to the mark) and replace the cap.
• Place the cuvette into the holder and close the lid.
• Press ZERO key. The display will show “-0.0-” when the
meter is zeroed and ready for measurement.
• Remove the cuvette.
• Add the content of one packet of HI 93707-0 reagent. Replace
the cap and shake gently for about 15 seconds.
Nitrite LR
NITRITE LOW RANGE
10 mL
Nitrite HR
• Reinsert the cuvette into the instrument.
• Press TIMER and the display will show the countdown prior
to the measurement or, alternatively, wait for 10 minutes
and press READ. When the timer ends the meter will
perform the reading. The instrument displays concentration
in mg/L of nitrite.
• Press the
or
to access the second level of functions.
• Press the
Chem Frm
functional key to convert the result in mg/L of nitrogen-nitrite (NO
2
–
-N) and sodium
nitrite (NaNO
2
).
• Press the
or
to go back to the measurement screen.
