
Gastec 218 Ozone O3 in Water detector tube (1 ~ 10 mg/L)
Manufacturer: Gastec Model: 218 - Contact
See more: Equipment Calibration-Inspection & Repair Service
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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. |
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 |
(i.e. in solution).
Dissolved sulphide detector tube
211H / 211M / 211 / 211LL
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Liquid detector tube
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* Adjustment for pH is required when measuring with liquid detector tubes.
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