Product Description
Details
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 |
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 |
