Description
GAS211LL Sulphide Ions Gastec Soluble 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 | 0.5 to 20 ppm |
Sampling Time | 2 minutes |
Detecting Limit | 0.2 ppm |
Colour Change | White Brown |
Reaction Principle | S2- + Pb (CH3COO)2 PbS |
Coefficient of Variation | 15% (for 0.5 to 3.0 ppm), 10% (for 3.0 to 20 ppm) |
Shelf Life | 3 Years |
Corrections for temperature & humidity |
Unnecessary |
Store the tubes at cool and dark place. |
Possible coexisting substances and their interferences |
Substance | Concentration | Interference | Change colour by itself |
SO32- | ≤20 ppm | No error | No discoloration ≤1% |
Cl– | ≤100 ppm | No error | No discoloration ≤5% |
Cr6+ | ≥0.2 ppm | – | Yellow discoloration ≥1ppm |
CO32- | ≤500 ppm | No error | No discoloration ≤1% |
S2O32- | ≤20 ppm | No error | No discoloration ≤1% |
I- | ≤ 200 ppm | No error | Yellow discoloration ≥3000 ppm |
SO42- | ≤100 ppm | No error | No discoloration ≤1% |
PO43- | ≤ 100 ppm | No error | No discoloration ≤1% |
Calibration gas generation | Sodium Sulphide standard solution |
Additional Information
Weight | 0.1 kg |
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Multi Gas Tags | |
Gas Range | |
Brand | |
Configuration |
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