35
METHOD PROCEDURES
35
35
CHLORINE DIO
XIDE
10.3. CHLORINE DIOXIDE
SPECIFICATIONS
Range
0.00 to 2.00 mg/L (as ClO
2
)
Resolution
0.01 mg/L
Accuracy
±0.10 mg/L ±5% of reading at 25 °C
Light Source
LED with narrow band interference filter @ 575 nm
Method
Adaptation of the Chlorophenol Red Method
REQUIRED REAGENT
Code Description
Quantity
HI93738A-0
Chlorine Dioxide Reagent A
1 mL
HI93738B-0
Chlorine Dioxide Reagent B
1 packet
HI93738C-0
Chlorine Dioxide Reagent C
1 mL
HI93738D-0
Chlorine Dioxide Reagent D
1 mL
REAGENT SETS
HI93738-01
Reagents for 100 tests
HI93738-03
Reagents for 300 tests
For other accessories see ACCESSORIES section.
SAMPLING PROCEDURE
It is recommended to analyze Chlorine Dioxide samples immediately after collection. Chlorine Dioxide
samples must be stored in sealed dark glass bottles, with minimal head space. Excessive heat (above
25 °C / 77 °F), agitation and exposure to light must be avoided.
MEASUREMENT PROCEDURE
• Select the
Chlorine Dioxide
method using the procedure described in the METHOD SELECTION
section.
• Fill two graduated mixing cylinders (#1 & #2) up to the 25 mL mark with the sample.
#1
25 ml
#2
25 ml