Indicator: 2 to100 ppm
Measuring Range:
+ 2 to100 ppm, Number of Pump Strokes 2
+ 100 to 200 ppm, Number of Pump Strokes 1
Sampling Time: 1.5 minute per pump stroke
Colour Change: White → Brown
Reaction Principle: C6H4(CH3)2 + I2O5 + H2SO4 → I2
Coefficient of Variation: 10% (for 2 to 30 ppm), 5% (for 30 to 100 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
| 2 to100 ppm |
100 to 200 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
1.5 minutes per pump stroke |
| Detecting Limit |
1 ppm (n=2) |
| Colour Change |
White → Brown |
| Reaction Principle |
C6H4(CH3)2 + I2O5 + H2SO4 → I2 |
| Coefficient of Variation |
10% (for 2 to 30 ppm), 5% (for 30 to 100 ppm) |
| Shelf Life |
3 Years |
| Corrections for temperature & humidity |
Unnecessary |
| Store the tubes at cool and dark place. |
Possible coexisting substances and their interferences
(NOTE)
| Substance |
Concentration |
Interference |
Change colour by itself to |
| Acetylene , Ethylene , Hexane |
|
No |
No |
| Alcohols , Esters , Ketones |
|
No |
No |
| Aromatic hydrocarbons |
|
+ |
Brown |
| Calibration gas generation |
Diffusion tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 100 ppm |
150 ppm |
1.0 to 7.0% |
