Hanna-instruments HI 83215-2008 Series Manual de usuario descargar pdf (Pagina 46)

Potassium LR

POTASSIUM LOW RANGE

SPECIFICATIONS

Range 0.0 to 20.0 mg/L

Resolution 0.5 mg/L

Accuracy ±3.0 mg/L ±7% of reading at 25 °C

Typical EMC ±0.5 mg/L

Deviation

Light Source Tungsten lamp with narrow band interference filter @ 610 nm

Method Adaptation of the Turbidimetric Tetraphenylborate method. The reaction between

Potassium and reagents causes turbidity in the sample.

REQUIRED REAGENTS

Code Description Quantity

HI 93750A-0 Potassium Reagent 6 drops

HI 93750B-0 Powder Reagent 1 packet

REAGENT SETS

HI 93750-01 Reagents for 100 tests

HI 93750-03 Reagents for 300 tests

For other accessories see page 50.

MEASUREMENT PROCEDURE

Note: for sample preparation follow the IRRIGATION WATER (LR) procedure at page 19.

• Select the

Potassium LR

method using the procedure

described in the

Method Selection

section (see page 12).

• Fill the cuvette with 10 mL of sample, up to the mark.

• Add 6 drops of HI 93750A-0 Potassium Reagent,

replace the cap and swirl the solution.

• Place the cuvette into the holder and close the lid.

10 mL

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Hanna-instruments HI 83215-2008 Series Manual de usuario Pagina 46