Indicator: 1 ~ 20 ppm
Measuring Range: 1 ~ 20 ppm
Sampling Time: 2 minute per pump stroke
Colour Change: Bluish purple→White
Reaction principle: SO2F2 → SO2, SO2 + l2 + H2O → HI + H2SO4
Nr. of tests: 4 tubes
Gas Sampler pump: GV-100S, GV-110S, Pyrotec Pyrolyzer 860
Details
Catalog
Performance
Measuring Range |
1 to 20 ppm |
Number of Pump Strokes |
3 |
Correction Factor |
1 |
Sampling Time |
2 minutes per pump stroke |
Detecting Limit |
0.4 (n=3) |
Colour Change |
Bluish purple→White |
Reaction Principle |
SO2F2 → SO2 SO2 + l2 + H2O → HI + H2SO4 |
Coefficient of Variation |
10% (for 1 to 20ppm) |
Shelf Life |
2 Years |
Corrections for temperature & humidity |
Temperature correction is necessary |
Store the tubes at cool and dark place. |
Possible coexisting substances and their interferences
(NOTE)
Substance |
Concentration |
Interference |
Change colour by itself to |
Sulphur Dioxide |
≧0.04 ppm |
+ |
White at 0.05 ppm |
Carbon Dioxide |
≦5 % |
No |
No |
Chloropicrin(CP) |
≦50ppm |
No |
No ( 50ppm) |
Methyl Isothiocyanate(MITC) |
≦50ppm |
No |
No ( 50ppm) |
Low Oxygen environment |
|
+ |
No |
Calibration gas generation |
Vaper pressure method |
TLV-TWA |
TLV-STEL |
Explosive range |
5ppm(2014) |
10ppm(2014) |
-- |