42
METHOD PROCEDURES
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42
CHLORINE
, FREE
10.5. CHLORINE, FREE
SPECIFICATIONS
Range
0.00 to 5.00 mg/L (as Cl
2
)
Resolution
0.01 mg/L
Accuracy
±0.03 mg/L ±3% of reading at 25 °C
Light Source
LED with narrow band interference filter @ 525 nm
Method
Adaptation of the EPA DPD Method 330.5
REQUIRED REAGENTS
POWDER
Code Description
Quantity
HI93701-0
Free Chlorine Reagent
1 packet
LIQUID
Code Description
Quantity
HI93701A-F
Free Chlorine Reagent A
3 drops
HI93701B-F
Free Chlorine Reagent B
3 drops
REAGENT SETS
HI93701-F
Reagents for 300 tests (liquid)
HI93701-01
Reagents for 100 tests (powder)
HI93701-03
Reagents for 300 tests (powder)
For other accessories see ACCESSORIES section.
MEASUREMENT PROCEDURE
• Select the
Chlorine (Free)
method using the procedure described in the METHOD SELECTION section.
• Fill the cuvette with 10 mL of unreacted sample (up to the mark).
Replace the plastic stopper and the cap.
• Insert the cuvette into the holder and close the lid.
10 mL
