Hanna Instruments HI 83200C User Manual

Page 41

Molybdenum

MOLYBDENUM

SPECIFICATIONS

Range

0.0 to 40.0 mg/L

Resolution

0.1 mg/L

Accuracy

±0.3 mg/L ±5% of reading at 25 °C

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 93730

A-0

Reagent A

1 packet

HI 93730

B-0

Reagent B

1 packet

HI 93730

C-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 the

Zero key. The display will show “-0.0-” when the meter is zeroed and ready for

measurement.

Manganese LR

• Insert the second cuvette with the reacted sample into the instrument.

• Press

Read to start the reading. The instrument displays the results in

µµµµµ

g/L of manganese.

• Press ▲ or ▼ to access the second level functions.
• Press the

Chem Frm key to convert the result in

g/L of potassium permanganate (KMnO

) and

permanganate (MnO

• Press ▲ or ▼ to return to the measurement screen.

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.

10 mL