Hanna Instruments HI 83266 User Manual

Page 12

Bromine

BROMINE

SPECIFICATIONS

Range

0.00 to 10.00 mg/L

Resolution

0.01 mg/L

Accuracy

±0.08 mg/L ±3% of reading at 25 °C

Typical EMC

±0.01 mg/L

Deviation
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, DPD method. The reaction between bromine and the reagent causes a

pink tint in the sample.

REQUIRED REAGENTS

Code

Description

Quantity

HI 93716-0

DPD Reagent

1 packet

REAGENT SETS

HI 93716-01 Reagents for 100 tests
HI 93716-03 Reagents for 300 tests
For other accessories see page 46.

MEASUREMENT PROCEDURE

• Select the

Bromine method using the procedure described in the

Method Selection section (see page 15).

• 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.

Bromine

• Remove the cuvette and add the content of one packet of

HI 93716-0 DPD reagent. Replace the cap and shake
gently for about 20 seconds to dissolve most of the
reagent.

• Reinsert the cuvette into the instrument.

• Press

Timer and the display will show the countdown prior to the measurement or, alternatively, wait

for 2 minutes and 30 seconds and press

Read. When the timer ends the meter will perform the

reading.

• The instrument displays the results in

mg/L of bromine.

INTERFERENCES

Interference may be caused by: Chlorine, Iodine, Ozone, Oxidized forms of Chromium and Manganese.
In case of water with hardness greater than 500 mg/L CaCO

, shake the sample for approximately

2 minutes after adding the reagent.
In case of water with alkalinity greater than 250 mg/L CaCO

or acidity greater than 150 mg/L CaCO

the color of the sample may develop only partially, or may rapidly fade. To resolve this, neutralize the
sample with diluted HCl or NaOH.

10 mL