LaMotte COD Plus Colorimeter 1922-EX2 - Manual (Page 100)

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 * are considered hazardous substances. Material
Data Safety Sheets (MSDS) are supplied for these reagents. For your safety, read label
and accompanying MSDS before using.
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:
Drinking, pool and aquatic waters.
RANGE: 0.00 – 0.40 ppm Ozone, Low Range
0.00
- 2.50 ppm Ozone, 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.
COD PLUS TEST PROCEDURES 6/02 OZONE 1/3