156
8.49. OZONE
SPECIFICATIONS
Range
0.00 to 2.00 mg/L (as O
3
)
Resolution
0.01 mg/L
Accuracy
±0.02 mg/L ±3% of reading at 25 °C
Light Source
LED with narrow band interference filter @ 525 nm
Method
Colorimetric DPD Method.
REQUIRED REAGENTS
Code
Description Quantity
HI93757‑0
Ozone
Reagent
1
packet
HI93703‑52‑0
Glycine Powder (Optional Reagent)
1 packet
REAGENT SETS
HI93757‑01
Reagents for 100 tests
HI93757‑03
Reagents for 300 tests
HI93703‑52
Reagents for 100 tests (Optional)
For other accessories see page 200.
Note: If the sample is suspected to contain chlorine residue (free or total chlorine), follow
the alternative measurement procedure described below, chlorine is a strong interferent.
• Perform the Standard Measurement Procedure. Record the result as Value A.
• Perform Additional Measurement Procedure. Record the result, Value B.
• To determine the ozone concentration in mg/L subtract Value B from Value A.
mg/L ozone (O
3
) = Value A – Value B.
STANDARD MEASUREMENT PROCEDURE
• Select the
Ozone
method using the procedure described in the
Method Selection section (see page 18).
• 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
OZONE