LaMotte SMART Spectro Spectrophotometer - Manual (Page 210)

OZONE
INDIGO METHOD • CODE 365I-SC
QUANTITY CONTENTS CODE
15 mL Chlorine Inhibitor 3990-E
250 mL * Ozone Buffer *3991-K
30 mL Indigo Blue Stock Solution 3989-G
1 Sampling Apparatus 0681
1 Pipet, transfer, 1.0 mL 2-2170
1 Pipet, transfer, 5 mL 0329
1 Pump, 10 mL 30527
1 Bottle, HR Reagent, amber glass 0680-J
1 Graduated Cylinder, 50 mL, glass 0418
*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.
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.
APPLICATION: Drinking water; swimming pool water.
RANGE: 0.00–0.40 ppm Ozone, Low Range
0.00–1.50 ppm Ozone, High Range
MDL: 0.02 ppm, Low Range
0.05 ppm, High Range
METHOD: Ozone rapidly and stoichiometrically decolorizes Indigo
Trisulfonate under acidic conditions.
SAMPLE HANDLING
& PRESERVATION:
Ozone is extremely unstable in aqueous solutions. Test
must be performed immediately and the sample must
not be agitated.
INTERFERENCES: Manganese at any level interferes.
SMART Spectro Test Procedures 2.11 OZONE
Test P
rocedures