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Indicator: 2~50%
Measuring Range:
+ 1 ~ 2%, 1 Number of Pump Strokes
+ 2 ~ 50%, 1/2 Number of Pump Strokes
Sampling Time: 1 minute per 1/2 pump stroke
Colour Change: White → Blackish brown
Reaction Principle: 5CO + I2O5 + H2S2O7 → I2
Coefficient of Variation: 10% (for 2 to 15 %), 5% (for 15 to 50 %)
Nr. of tests: 10
Pump: GV-100S/110S
| t of Variation | 10% (for 2 to 15 %), 5% (for 15 to 50 %) |
| Shelf Life | 3 Years |
| Corrections for temperature & humidity | Unnecessary |
| Store the tubes at cool and dark place. | |
| Substance | Concentration | Interference | Change colour by itself to |
| Acetylene |  0.2% |
Puls error | Blackish brown |
| Olefines (Ethylene, Propylene) |
2/3 |
Puls error | Brown |
| Butane | 1% |
Puls error | Pale brown (whole layer) |
| Propane | 20% |
Puls error |
| Calibration gas generation | High pressure gas cylinder method |
| TLV-TWA | TLV-STEL | Explosive range |
| 25 ppm(2014) | - | 12.5 to 74% |
