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METHOD PROCEDURES
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AMMONIA LOW RANGE
11. METHOD PROCEDURES
11.1. AMMONIA LOW RANGE
SPECIFICATIONS
Range 0.00 to 3.00 mg/L (as NH
3
-N)
Resolution 0.01 mg/L
Accuracy ±0.04 mg/L ±4% 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
HI93700A-0 Ammonia Low Range Reagent A 4 drops
HI93700B-0 Ammonia Low Range Reagent B 4 drops
REAGENT SETS
HI93700-01 Reagents for 100 tests
HI93700-03 Reagents for 300 tests
For other accessories see ACCESSORIES section.
MEASUREMENT PROCEDURE
• Select the Ammonia LR method using the procedure described in the METHOD SELECTION section.
• Fill the cuvette with 10 mL of unreacted sample (up to the mark).
Replace the plastic stopper and the cap.
• Insert the cuvette into the holder and close the lid.
• Press Zero. The display will show “-0.0-” when the meter is zeroed and ready for measurement.
10 mL
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