Hanna-instruments HI 83225 Manual do Utilizador descarregar pdf (Página 28)

Ammonia LR

SPECIFICATIONS

Range 0.0 to 10.0 mg/L

Resolution 0.01 mg/L

Accuracy ±0.1 mg/L ±4% of reading at 25 °C

Typical EMC Dev. ±0.1 mg/L

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 93715A-0 First Reagent 4 drops (6 drops for seawater)

HI 93715B-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 57.

MEASUREMENT PROCEDURE

ATTENTION:

Note: for sample preparation follow the IRRIGATION WATER (LR) procedure at page 20.

• Select the

Ammonia LR

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 LOW RANGE

10 mL

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 59 60

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