Hanna-instruments HI 83200-01 Manual de usuario descargar pdf (Pagina 38)

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Magnesium

• Remove the cuvette.

• Using the other 1 mL syringe, add to the cuvette exactly 0.5 mL of sample.

Note: Do not mix up the two syringes!

• Replace the cap and invert several times to mix.

• Reinsert the cuvette into the instrument.

• Press TIMER and the display will show the countdown prior

to the measurement or, alternatively, wait for 15 seconds

and press READ. When the timer ends the meter will

perform the reading.

• The instrument displays the results in mg/L of Magnesium (Mg).

INTERFERENCES

Interferences may be caused by:

Acidity (as CaCO

) above 1000 mg/L

Alkalinity (as CaCO

) above 1000 mg/L

Calcium (Ca

) above 200 mg/L

Iron must be absent

Aluminum must be absent

Copper must be absent

0.5 mL

of sample

Magnesium

SPECIFICATIONS

Range 0 to 150 mg/L

Resolution 5 mg/L

Accuracy ±5 mg/L ±3% of reading

Light Source Tungsten lamp with narrow band interference filter @ 466 nm

Method Adaptation of the Calmagite method

REQUIRED REAGENTS

Code Description Quantity

HI 93752

A-0 Mg Magnesium Buffer Reagent 1 mL

HI 93752

B-0 Mg Magnesium Indicator Reagent 9 mL

REAGENT SETS

HI 937520-01 Reagents for 50 tests

HI 937520-03 Reagents for 150 tests

For other accessories see page 128.

MEASUREMENT PROCEDURE

Note: for sample preparation follow the IRRIGATION WATER (LR) procedure on

page 17.

• Select the

Magnesium

method using the procedure described in the

Method Selection

section (see page 12).

• Using one 1 mL syringe add exactly 1.00 mL of HI 93752A-0 Mg

Buffer reagent to the cuvette and use the pipette to fill the cuvette

up to the 10 mL mark with the HI 93752B-0 Mg Indicator

reagent.

• Replace the cap and invert several times to mix.

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

• Press ZERO key. The display will show “-0.0-” when the meter is zeroed

and ready for measurement.

1 mL

MAGNESIUM

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