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GAS211M Sulphide Ions Gastec Detector Tubes 2 – 300ppm
GAS211M 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.
|Measuring Range||2 to 300 ppm|
|Sampling Time||2 minutes|
|Detecting Limit||0.5 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|
temperature & humidity
|Store the tubes at cool and dark place.|
Possible coexisting substances and their interferences
|Substance||Concentration||Interference||Change colour by itself|
|CO32-||≥500 ppm||Plus error||No discoloration|
|Cl–||≥15000 ppm||Plus error||No discoloration|
|CrO42-||≥50 ppm||Minus error||Yellow discoloration|
|SO32-||≥200ppm||Minus error||No discoloration|
|S2O32-||≥100 ppm||Plus error||No discoloration|
|Calibration gas generation||Sodium Sulphide standard solution|
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