Hanna-instruments HI 83225 Bedienungsanleitung PDF herunterladen (Seite 34)

Nitrate LR

SPECIFICATIONS

Range 0.0 to 30.0 mg/L

Resolution 0.5 mg/L

Accuracy ±1.0 mg/L ±8% of reading at 25 °C

Typical EMC Dev. ±0.5 mg/L

Light Source Tungsten lamp with narrow band interference filter @ 525 nm

Method Adaptation of the cadmium reduction method. The reaction between nitrate-nitrogen

and the reagent causes an amber tint in the sample.

REQUIRED REAGENTS

Code Description Quantity

HI 93728-0 Powder reagent 1 packet

REAGENT SETS

HI 93728-01 Reagents for 100 tests

HI 93728-03 Reagents for 300 tests

For other accessories see page 57.

MEASUREMENT PROCEDURE

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

• Select the

Nitrate LR

method using the procedure described

in the

Method Selection

section (see page 12).

• Using the pipette, fill the cuvette with 6 ml of sample, up

to half of its height, 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.

• Remove the cuvette and add the content of one packet of

HI 93728-0 reagent.

NITRATE LOW RANGE

6 mL

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Hanna-instruments HI 83225 Bedienungsanleitung Seite 34