Hanna Instruments HI 83225-01 - Manual (Page 34)

34 Nitrate LR
SPECIFICATIONS
Range 0.0 to 30.0 mg/L
Resolution 0.5 mg/L
Accuracy ±1.0 mg/L ±8% of reading at 25 °C
Typical EMC Dev. ±0.5 mg/L
Light Source
Tungsten lamp with narrow band interference filter @ 525 nm
Method Adaptation of the cadmium reduction method. The reaction between nitrate-nitrogen
and the reagent causes an amber tint in the sample.
REQUIRED REAGENTS
Code Description Quantity
HI 93728-0 Powder reagent 1 packet
REAGENT SETS
HI 93728-01 Reagents for 100 tests
HI 93728-03 Reagents for 300 tests
For other accessories see page 57.
MEASUREMENT PROCEDURE
Note: for sample preparation follow the IRRIGATION WATER (LR) procedure at page 20.
• Select the
Nitrate LR method using the procedure described
in the Method Selection section (see page 12).
• Using the pipette, fill the cuvette with 6 ml of sample, up
to half of its height, and replace the cap.
• Place the cuvette into the holder and close the lid.
• Press the Zero key. The display will show “-0.0-” when the meter is zeroed and ready for
measurement.
• Remove the cuvette and add the content of one packet of
HI 93728-0 reagent.
NITRATE LOW RANGE
6 mL