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METHOD PROCEDURES
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AMMONIA HIGH RANGE
11.3. AMMONIA HIGH RANGE
SPECIFICATIONS
Range 0.0 to 100.0 mg/L (as NH
3
-N)
Resolution 0.1 mg/L
Accuracy ±0.5 mg/L ±5% of reading at 25 °C
Light Source LED with narrow band interference filter @ 420 nm
Method Adaptation of the ASTM Manual of Water and Environmental Technology,
D1426, Nessler Method
REQUIRED REAGENTS
Code Description Quantity
HI93733A-0 Ammonia High Range Reagent A 4 drops
HI93733B-0 Ammonia High Range Reagent B 9 mL
REAGENT SETS
HI93733-01 Reagents for 100 tests
HI93733-03 Reagents for 300 tests
For other accessories see ACCESSORIES section.
MEASUREMENT PROCEDURE
• Select the Ammonia HR method using the procedure described in
the METHOD SELECTION section.
• Add 1 mL of unreacted sample to the cuvette using a 1 mL syringe.
• Use the pipette to fill the cuvette up to the 10
mL mark with HI93733B-0 Ammonia High
Range Reagent B. Replace the plastic stopper
and the cap. Swirl to mix the solution.
• Insert the cuvette into the holder and close the lid.
1 mL
10 mL
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