Gastec 218 臭氧检知管(1~10 mg / L)

Indicator: 2 ~ 10 mg/L
Measuring Range: 1 ~ 10 mg/L
Sampling Time:  3 minute
Colour Change: Pale blue → White
Reaction Principle: 2O3 + C16H10N2O2 → 2C8H5NO2 + 2O2
Nr. of tests: 10




Measuring Range (1) to 10 mg/L
Sampling Time 3 minutes
Detecting Limit 0.5 mg/L
Colour Change Pale blue → White
Reaction Principle Ozone react with indigo to produce chemical reaction products to discolour 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)
Substance Concentration Interference Change colour by itself to
H2O2 0.05 mg/l No
ClO- 5(Cl) mg/l White for whole layer
higher than 500mg/l
(Not produce demarcation)
500(Cl) mg/l  
Acid (H+)   + No
Alkali (OH-)   No
Detector tubes for dissolved substances
(i.e. in solution).
Dissolved sulphide detector tube
211H / 211M / 211 / 211LL
Liquid detector tube
Ozone: 218
Chloride ion: 221L / 221LL
Mercury: 271
Hexavalent chromium: 273
Bivalent iron: 281
Copper: 284
Zinc: 285
Nicke: 291
To measure, simply immerse the detector tube in a sample of liquid (placed in a beaker or other container). Anyone can measure concentrations quickly, easily and accurately on site.

* Adjustment for pH is required when measuring with liquid detector tubes.
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