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OZONE - DPD LIQUID
1200 COLORIMETER, 0-3 ppm
CODE 3598
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
1 Colorimeter Tubes, with caps 0290-6
1 Water Sample Collecting Bottle 0688
1 1200 Colorimeter for Ozone DPD 26913
*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.
To order individual reagents or test kit components, use the specifi ed code number.
INTRODUCTION
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 artifi cial habitats.
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OZONE TEST PROCEDURE - DPD METHOD
Read the 1200 Colorimeter Manual before proceeding. Carefully
wipe tubes dry before inserting into the colorimeter chamber.
FREE AVAILABLE CHLORINE
1.
3.
1200 COLORIMETER
••••••••••••••••••••••
ZERO
READ
5.
Rinse and fill a
colorimeter tube
(0290) to the
10 mL line with
sample water.
Cap and wipe
dry.
Push the READ
button to turn the
meter on. Press
the ZERO button
and hold it for
2 seconds until
bla is displayed.
Release the button
to take a zero
reading (0.00 ppm).
Add 5 drops DPD
#1A Free Chlorine
Reagent (6740),
and 5 drops of
*DPD #1B Free
Chlorine Reagent
(6741).
2.
4.
6.
Insert the
tube into the
chamber, being
sure to align
the index line
with the arrow
on the meter.
Close the lid.
This tube is the
blank or zero.
Remove the tube
and add 5 drops
DPD #3 Total
Chlorine Reagent
(6743). Swirl to
mix.
Cap tube and
invert to mix.
Wipe tube dry.
Make reading
within 30 seconds.
7.
Insert the
tube into the
chamber, being
sure to align
the index line
with the arrow
on the meter.
Close the lid.
8.
2.55
1200 COLORIMETER
••••••••••••••••••••••
ZERO
READ
Push the READ
button. Record
reading as ppm
Total Residual
Chlorine.
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CAUTION: DO NOT leave reacted DPD samples in test tubes (0290). Discard sample
and thoroughly rinse tubes. If allowed to remain, DPD will stain tubes, signifi cantly
impairing the operation of the 1200 Colorimeter. If necessary, acid wash, and
vigorously clean glassware with test tube brush and detergent.
DPD CHLORINE TEST METHOD SPECIFICATIONS
APPLICATION
Bottled water, aquatic waters, and non-chlorinated waters.
RANGE
0 to 3.0 mg/L Ozone.
METHOD
In the presence of Iodide, Ozone reacts instantly with the buffered diethyl-pphenylenediamine indicator (DPD) to produce a red color in proportion to the amount
of ozone present.
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 thes kit has a signifi cant 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.
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LaMOTTE COMPANY
Helping People Solve Analytical Challenges
®
PO Box 329 • Chestertown • Maryland • 21620 • USA
800-344-3100 • 410-778-3100 (Outside USA) • Fax 410-778-6394
Visit us on the web at www.lamotte.com
63598 07/14
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