Hanna Instruments HI 83200C User Manual

Page 13

Ammonia MR

SPECIFICATIONS

Range

0.00 to 10.00 mg/L

Resolution

0.01 mg/L

Accuracy

±0.05 mg/L ±5% of reading at 25 °C

Typical EMC

±0.01 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 128.

MEASUREMENT PROCEDURE

• 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

Alkalinity

10 mL

• Remove the cuvette.

Note: Any chlorine present in the sample will interfere with the

reading. To remove the chlorine interference add one drop
of HI 93755-53 Chlorine Remover to the unreacted sample

• Carefully add exactly 1 mL of HI 93755-0 Liquid Alkalinity

Reagent using the supplied syringe.

• Replace the cap and invert 5 times.

• Reinsert the cuvette into the instrument and close the lid.

• Press

Read to start the reading.

• The instrument displays the results in

mg/L of alkalinity (CaCO

Note: If using a meter with software version 1.14 or earlier, readings can be improved for samples

with less than 75 ppm alkalinity by adding 0.7 mL of reagent instead of 1.0 mL.