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
