Hanna Instruments HI 83225 - Manual (Page 24)

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Ammonia HR
SPECIFICATIONS
Range 0 to 100 mg/L
Resolution 1 mg/L
Accuracy ±1 mg/L ±4% of reading at 25 °C
Typical EMC Dev. ±1 mg/L
Light Source
Tungsten lamp with narrow band interference filter @ 420 nm
Method Adaptation of the ASTM Manual of Water and Environmental Technology, D1426-92,
Nessler method. The reaction between ammonia and reagents causes a yellow tint in
the sample.
REQUIRED REAGENTS
Code Description Quantity
HI 93715A-0 First Reagent 4 drops (6 drops for seawater)
HI 93715B-0 Second Reagent 4 drops (10 drops for seawater)
REAGENT SETS
HI 93715-01 Reagents for 100 tests
HI 93715-03 Reagents for 300 tests
For other accessories see page 57.
MEASUREMENT PROCEDURE
ATTENTION:
Note: for sample preparation follow the NUTRIENTS SOLUTION (HR) procedure at page 22.
• Select the Ammonia HR method using the procedure
described in the Method Selection section (see page 12).
• Fill the cuvette 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 the Zero key. The display will show “-0.0-” when the meter is zeroed and ready for
measurement.
AMMONIA HIGH RANGE
10 mL