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Ozone (O3)
Item Item Details
(Price is for domestic US market only)
Ozone (O3)
Item Name:
Ozone (O3)
Item #:

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Ozone in Water O3

No: 218



Measuring Range

(1) to 10 mg/l

Sampling Time

3 minutes

Detecting Limit

0.5 mg/l

Color Change

White Pale blue

Reaction Principle

Ozone react with indigo to produce chemical
products to discolor the reagent to white.

2O3+ C16H10N2O2 2C8H5NO2+ 2O2

Shelf Life 3 Years
Corrections for
temperature & humidity
Water temperature correction is necessary
Store the tubes at cool and dark place.

Possible coexisting substances and their interferences (NOTE)




Change color by itself


0.05 mg/l or higher

Minus error

No discoloration.


5 mg/l or higher

Minus error

Produce white discoloration for whole layer.
Do not produce demarcation.

500mg/l or higher

White stain

Acid (H+)


Plus error

No discoloration

Alkali (OH-)


Minus error

No discoloration

Range 1-10mg/l

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