Hanna Instruments HI 83208-2008 User Manual

Page 13

Total Chlorine

• Press ZERO key. The meter will show “-0.0-” when the meter is zeroed and ready for measurement.

• Remove the cuvette.
Powder reagents procedure
• Add 1 packet of HI 93711-0 DPD reagent. Replace the cap and

shake gently for 20 seconds (or 2 minutes for seawater analysis).

• 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 total chlorine.

Liquid reagents procedure
• To an empty cuvette add 3 drops of HI 93701A-T

DPD1 indicator, 3 drops of HI 93701B-T DPD1 buffer and
1 drop of HI 93701C DPD3 solution. Swirl gently to mix
and immediately add 10 mL of unreacted sample.
Replace the cap and shake gently again.

• Reinsert the cuvette into the instrument.

x 3

x 1

Total Chlorine

TOTAL CHLORINE

SPECIFICATIONS

Range

0.00 to 3.50 mg/L

Resolution

0.01 mg/L

Accuracy ±0.03 mg/L ±3% of reading
Typical EMC

±0.01 mg/L

Deviation
Light Source

Tungsten lamp with narrow band interference filter @ 525 nm

Method

Adaptation of the

EPA DPD method 330.5. The reaction between the chlorine and the

DPD reagent causes a pink tint in the sample.

REQUIRED REAGENTS

POWDER:

Code

Description

Quantity

HI 93711-0

DPD

1 packet

LIQUID:

Code

Description

Quantity

HI 93701A-T

DPD1 indicator

3 drops

HI 93701B-T

DPD1 buffer

3 drops

HI 93701C

DPD3 solution

1 drop

REAGENT SETS

HI 93701-T Reagents for 300 total chlorine tests (liquid)
HI 93711-01 Reagents for 100 total chlorine tests (powder)
HI 93711-03 Reagents for 300 total chlorine tests (powder)
For other accessories see page 73.

MEASUREMENT PROCEDURE

• Select the

Total Chlorine 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.

10 mL