Performance |
Measuring Range | 1.3 to 200 ppm |
Sampling Hours | 1 to 8 hours |
Detecting Limit | 1.3 ppm (8hours) |
Color Change | Reddish purple → Palebrown |
Reaction Principle | CH2:CHCH:CH2 + MnO4 仺 Pale brown product |
Coefficient ofVariation | 10%(for 10 to 200 ppmr) |
ShelfLife | 2 Year |
Correctionsfor temperature & humidity | Temperature correction isnecessary |
Store the tubes atcool and dark place. |
Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Interference | Change colour byitself to |
Unsaturatedhydrocarbons | + | Palebrown |
Othersubstance measurable with this detectortube |
Substance | CorrectionFactor | SamplingTime | MeasuringRange |
Ethylene | Factor: 1.2 | 1 to 10 | 1.5 to240 ppm |
Vinylchloride | Factor: 1.2 | 1 to 10 | 1.5 to240 ppm |
Isoprene | Factor: 2.0 | 1 to 10 | 2.5 to 400 ppm |
Trans-1,2-Dichloroethylene | Factor: 3.0 | 1 to 10 | 3.8 to 600ppm |
Calibration gasgeneration | Diffusion tubemethod |
TLV-TWA | TLV-S | Explosive range |
2 ppm | - | 2.0to 12% |