Product Description
Details
GAS221LL Gastec Chloride Ion Detector Tubes
The soluble ion tube system offers a quicker, cheaper and easier alternative to using laboratory based anaylsers for measuring dissolved substances
(i.e. in solution).
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.
|
Performance |
|
Measuring Range |
10 to 200 mg/l |
|
Sampling Time |
3 minutes |
|
Detecting Limit |
3 mg/l |
|
Colour Change |
Brown White |
|
Reaction Principle |
2Cl- + Ag2CrO4 (Brown) 2AgCl (White) + CrO42+ |
|
Coefficient of Variation |
15% (for 10 to 50 mg/l), 10% (for 50 to 200 mg/l) |
|
Shelf Life |
3 Years |
|
Corrections for |
Unnecessary |
|
Store the tubes at cool and dark place. |
|
|
Possible coexisting substances and their interferences |
|
|
Substance |
Concentration |
Interference |
Change colour by itself |
|
CN- |
≥10 mg/l |
Plus error |
White discoloration (≥1 mg/l) |
|
Br- |
≥10 mg/l |
Plus error |
White discoloration (≥10 mg/l) |
|
SCN- |
≥1 mg/l |
Plus error |
White discoloration (≥100 mg/l) |
|
Fe2+ |
≥20 mg/l |
Minus error |
No discoloration (≤1000 mg/l) |
|
Fe3+ |
≥20 mg/l |
Plus error |
White discoloration (≥20 mg/l) |
|
F- |
≥1000 mg/l |
No error |
No discoloration (≤1000 mg/l) |
|
I- |
≥20 mg/l |
Plus error |
Pale yellow discoloration (≥20 mg/l) |
|
S2- |
≥3 mg/l |
Plus error |
Blackish grey discoloration (≥3 mg/l) |
|
SO42- |
≥1000mg/l |
No error |
No discoloration (≤1000 mg/l) |
|
Calibration gas generation |
Sodium Chloride standard solution |
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