Hanna-instruments HI 83200-01 Instrukcja Użytkownika Pobierz pdf (Strona 41)

80 81 Molybdenum

MOLYBDENUM

SPECIFICATIONS

Range 0.0 to 40.0 mg/L

Resolution 0.1 mg/L

Accuracy ±0.3 mg/L ±5% of reading

Typical EMC ±0.1 mg/L

Deviation

Light Source Tungsten lamp with narrow band interference filter @ 420 nm

Method Adaptation of the mercaptoacetic acid method. The reaction between molybdenum and

the reagents causes a yellow tint in the sample.

REQUIRED REAGENT

Code Description Quantity

HI 93730A-0 Reagent A 1 packet

HI 93730B-0 Reagent B 1 packet

HI 93730C-0 Reagent C 1 packet

REAGENT SETS

HI 93730-01 Reagents for 100 tests

HI 93730-03 Reagents for 300 tests

For other accessories see page 128.

MEASUREMENT PROCEDURE

• Select the

Molybdenum

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 ZERO key. The display will show “-0.0-” when

the meter is zeroed and ready for measurement.

Manganese LR

• Press READ to start the reading. The instrument displays the results in µg/L of manganese.

• Press the  or  to access the second level of functions.

• Press the Chem Frm functional key to convert the result in mg/L of potassium permanganate (KMnO

) and

permanganate (MnO

• Press the  or  to go back to the measurement screen.

Note: a temperature above 30°C may cause turbidity. In this case, before zeroing and taking readings,

add 2-3 drops of Dispersing Agent (HI 93703-51) to each cuvette and swirl until turbidity is removed

INTERFERENCES

Interference may be caused by:

Aluminum above 20 mg/L

Cadmium above 10 mg/L

Calcium above 200 mg/L as CaCO

Cobalt above 20 mg/L

Copper above 50 mg/L

Iron above 10 mg/L

Lead above 0.5 mg/L

Magnesium above 100 mg/L as CaCO

Nickel above 40 mg/L

Zinc above 15 mg/L.

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