Hanna Instruments HI 83200 User Manual

Page 50

Phosphate HR

PHOSPHATE HIGH RANGE

SPECIFICATIONS

Range

0.0 to 30.0 mg/L

Resolution

0.1 mg/L

Accuracy

±1 mg/L ±4% of reading at 25 °C

Typical EMC Dev. ±0.1 mg/L
Light Source

Tungsten lamp with narrow band interference filter @ 525 nm

Method

Adaptation of the

Standard Methods for the Examination of Water and Wastewater,

edition, Amino Acid method. The reaction between phosphate and reagents

causes a blue tint in the sample.

REQUIRED REAGENTS

Code

Description

Quantity

HI 93717

A-0

Molybdate

10 drops

HI 93717

B-0

Reagent B

1 packet

REAGENT SETS

HI 93717-01 Reagents for 100 tests
HI 93717-03 Reagents for 300 tests
For other accessories see page 124.

MEASUREMENT PROCEDURE

• Select the

Phosphate HR 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.

• Remove the cuvette.

• Add 10 drops of HI 93717A-0 Molybdate reagent.

• Remove the cuvette and add 5 drops of HI 93710-0 Phenol

Red Indicator. Replace the cap and mix the solution.

• Reinsert the cuvette into the instrument.

• Press the

Read key to start the reading. The instrument displays the pH value.

10 mL