39
Chlorine Dioxide
CHLORINE DIOXIDE
SPECIFICATIONS
Range
0.00 to 2.00 mg/L
Resolution
0.01 mg/L
Accuracy
±0.10 mg/L ±5% of reading at 25 °C
Typical EMC
±0.01 mg/L
Deviation
Light Source
Tungsten lamp with narrow band interference filter @ 575 nm
Method
Adaptation of the Chlorophenol Red method. The reaction between chlorine dioxide and
reagents causes a colorless to purple tint in the sample.
REQUIRED REAGENT
Code
Description
Quantity
HI 93738
A
-0
Reagent A
1 mL
HI 93738
B
-0
Dechlorinating Reagent B 1 packet
HI 93738
C
-0
Reagent C
1 mL
HI 93738
D
-0
Reagent D
1 mL
REAGENT SETS
HI 93738-01
Reagents for 100 tests
HI 93738-03
Reagents for 300 tests
For other accessories see page 132.
MEASUREMENT PROCEDURE
• Select the
Chlorine Dioxide method using the procedure
described in the
Method Selection section (see page 12).
• Fill two graduated mixing cylinders (# 1 & # 2) up to
the 25 mL mark with the sample.
• Add 0.5 mL of HI 93738A-0 Chlorine Dioxide Reagent to each cylinder (# 1 & # 2), close them and
invert several times to mix.
# 2
25 mL
# 1
25 mL
# 1 & # 2
# 1
# 2