Hanna-instruments HI 83218 Manual de usuario descargar pdf (Pagina 22)

10 mL

Chromium VI LR

CHROMIUM VI LOW RANGE

SPECIFICATIONS

Range 0 to 300 μg/L

Resolution 1 μg/L

Accuracy ±1 μg/L ±4% of reading at 25 °C

Typical EMC ±1 μg/L

Deviation

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

Method Adaptation of the

ASTM Manual of Water and Environmental Technology, D1687-92

Diphenylcarbohydrazide method. The reaction between chromium VI and the reagent

causes a purple tint in the sample.

REQUIRED REAGENTS

Code Description Quantity

HI 93749-0 Powder reagent 1 packet

REAGENT SETS

HI 93749-01 Reagents for 100 tests

HI 93749-03 Reagents for 300 tests

For other accessories see page 34.

MEASUREMENT PROCEDURE

• Select the

Chromium VI LR

method using the procedure described in the

Method Selection

section (see

page 11).

• 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 meter will show “-0.0-” when the meter is zeroed and ready for measurement.

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Hanna-instruments HI 83218 Manual de usuario Pagina 22