Hanna Instruments c 99 Manuel D’Utilisation

23

SPECIFICATIONS

Range

0.0 to 50.0 mg/L

Resolution

0.1 mg/L

Accuracy

±0.5 mg/L ±5% of reading

Typical EMC

±0.1 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  93733A-0 Nessler Reagent

 4 drops (in fresh and seawater)

HI  93733B-0 Ammonia Reagent  9 mL    (in fresh and seawater)

REAGENT SETS

HI 93733-01 Reagents for 100 tests
HI 93733-03 Reagents for 300 tests
For other accessories see page 141.

MEASUREMENT PROCEDURE

• Select the program number corresponding to Ammonia HR on the

secondary LCD by pressing PROGRAM W and V.

• Fill a cuvet with 1 mL of unreacted sample, by

means of the syringe.

• Add 9 mL of HI 93733B

Ammonia Reagent, by
means of the 3 mL plastic
pipette. Place the cap and
swirl the solution to mix.

• Place the cuvet into the holder and

ensure that the notch on the cap is
positioned securely into the groove.

Ammonia HR