Indicator: 5 to 50 ppm
Measuring Range:
+ 2 to 5 ppm, Number of Pump Strokes 2
+ 5 to 50 ppm, Number of Pump Strokes 1
+ 50 to 125 ppm, Number of Pump Strokes 1/2
Sampling Time: 3 minutes per pump stroke
Colour Change: Bluish Purple → White
Reaction Principle: COS + I2O5 + H2SO4 → SO2 + CO2, SO2 + I2 + H2O → 2HI + H2SO4
Coefficient of Variation: 10% (for 5 to 10 ppm), 5% (for 10 to 50 ppm)
Nr. of tests: 5
Pump: GV-100S/110S
Details
Catalog
Manual
manual tube
|
500 ppm |
+(Black) |
Black at 500ppm |
sulphur dioxide, Carbon disulphide |
|
+ |
White |
Carbon dioxide |
|
No |
No |
Nitrogen dioxide |
2 ppm |
+ |
Brown at 2ppm |
Hydrogen sulphide |
1000 ppm |
No effect at 1 pump stroke |
*1 |
Propane, Butane |
10% |
No |
Black at the top of the discoloured area. |
*1: If the primary tube is totally discoloured, the analyzer tube will be discoloured white due to the effect of hydrogen sulphide. |
Calibration gas generation |
High pressure gas cylinder method |
TLV-TWA |
TLV-STEL |
Explosive range |
5ppm(2014) |
- |
12 to 19% |