Performance |
Measuring Range | 1 to 100 ppm |
Sampling Hours | 1 to 10 hours |
Detecting Limit | 0.5 ppm (10hours) |
Color Change | Yellow→ Purple |
Reaction Principle | HF +Indicator 仺 Purple product |
Coefficient ofVariation | 15%(for 10 to 20 ppm-hr),10% (for 20 to 100 ppm-hr) |
ShelfLife | 3 Year |
Correctionsfor temperature & humidity | Temperature and Humiditycorrection is necessary |
Store the tubes atcool and dark place. |
Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Concentration | Interference | Change color by itself |
Chlorine | 1/5 time | + | Bleaches zero zone |
Hydrogen chloride Nitric acid | 1/5 time | + | Purple |
Calibration gasgeneration | Diffusion tubemethod |
TLV-TWA | TLV-S | Explosive range |
0.5ppm | C 2ppm | - |