25
Ammonia MR
SPECIFICATIONS
Range
0.0 to 50.0 mg/L
Resolution
0.5 mg/L
Accuracy
±0.5 mg/L ±4% of reading at 25 °C
Typical EMC
±0.5 mg/L
Deviation
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 93715
A
-0
First Reagent
4 drops (6 drops for seawater)
HI 93715
B
-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 50.
MEASUREMENT PROCEDURE
ATTENTION:
Note
:
for sample preparation follow the NUTRIENTS SOLUTION (MR) procedure at page 20.
• Select the
Ammonia MR 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 MEDIUM RANGE
10 mL