40
SPECIFICATIONS
Range
0.00 to 2.00 mg/L
Resolution
0.01 mg/L
Precision
±0.03 mg/L @ 1.00 mg/L
Typical EMC
±0.01 mg/L
Deviation
Light Source
Tungsten lamp with narrow band interference filter
@ 525 nm
Method
Colorimetric DPD Method. The reaction between
ozone and the DPD reagent causes a pink tint in
the sample.
REQUIRED REAGENTS
Code
Description
Quantity/test
HI 93757-0
DPD Powder Reagent
1 packet
HI 93703-52-0 Glycine Powder (Optional Reagent) 1 packet
REAGENT SETS
HI 93757-01
Reagents for 100 tests
HI 93757-03
Reagents for 300 tests
HI 93703-52
Glycine Powder, Optional Reagent for 100 tests
For other accessories see page 49.
IMPORTANT NOTE
: chlorine is a strong positive interference for the
ozone determination. If the sample is suspected to contain chlorine
residues (free or total chlorine), please follow the
alternative
measurement procedure described below:
• Perform the Standard Measurement Procedure and take note of
the reading:
value A
.
• On a fresh sample perform the Additional Measurement Procedure
and take note of the reading:
value B
.
• Subtract reading
B
from reading
A
to obtain the ozone concentration
in mg/L:
mg/L (O
3
) =
value A
–
value B
.
OZONE
Ozone