LaMotte SMART 2 - Manual (Page 207)

OZONE
DPD METHOD • CODE 4881
QUANTITY CONTENTS CODE
30 mL DPD #1A Free Chlorine Reagent P-6740-G
30 mL *DPD #1B Free Chlorine Reagent *P-6741-G
30 mL *DPD #3 Total Chlorine Reagent *P-6743-G
*WARNING: Reagents marked with an * are considered to be potential
health hazards. To view or print a Material Safety Data Sheet (MSDS) for
these reagents go to www.lamotte.com. To obtain a printed copy, contact
LaMotte by e-mail, phone or fax.
Note: The primary use for this kit is in applications that use only ozone and no
other oxidizing disinfectants.
Ozone is sometimes used in place of, or in conjunction with, chlorine or other
halogens for disinfection of pool, spa or drinking waters. Recently, large aquatic
facilities have begun using ozone as a disinfectant in many artificial habitats.
APPLICATION: Bottled water, aquatic waters, and non-chlorinated waters.
RANGE: 0.00 – 3.00 mg/L Ozone
METHOD: In the presence of iodide, ozone reacts instantly with the
buffered diethyl-p-phenylenediamine indicator (DPD) to
produce a red color in proportion to the amount of ozone
present.
SAMPLE
HANDLING &
PRESERVATION: Ozone in aqueous solutions, particularly weak solutions, is
not stable. Exposure to sunlight or agitation will accelerate
the reduction of ozone. Fill sample containers to the top and
cap tightly. Analyze samples as soon as possible after
collection.
INTERFERENCES: Interferences are other oxidizers, such as, chlorine, bromine,
iodine, and oxidized manganese. The DPD reagent system
used in this kit has a significant interference from chlorine.
The primary use for this kit is in applications that use only
ozone and not other oxidizing disinfectants in conjunction
with ozone.
Smart2 TEST PROCEDURES 12.08 Ozone-DPD 1/2