1,1,1-三氯乙烷檢測管135L
1,1,1-Trichloroethane 35L
CH3CCl3
| Performance |
MeasuringRange | 6 to 20 ppm | 20 to 200 ppm | 200 to 900 ppm |
Number of PumpStroke | 2 | 1 | 1/2 |
CorrectionFactor | 0.3 | 1 | 4.5 |
SamplingTime | 3 minutes per pumpstroke | ||
DetectingLimit | 3 ppm (n=2) | ||
ColorChange | White → PalePink | ||
ReactionFormula | 1,1,1-Trichloroethane reacts with oxidizing agent to produceintermediate products then it reacts with detecting agent toproduce pale pink stain. | ||
| Coefficient ofVariation | 10% (for 20 to 60ppm), 5% (for 60 to 200 ppm) | ||
| ShelfLife | 2Years | ||
| Correctionsfor temperature & humidity | Temperature correction is necessary | ||
| Store the tubes at cool and darkplace. | |||
| Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Concentration | Interference | Change color by itself |
Halogens | - | Plus error | Discolor pale pinkstain |
Nitrogenoxides | - | Plus error | Discolor pale pinkstain |
Saturated halogenatedhydrocarbons | - | Plus error | Discolor pale pinkstain |
| Othersubstance measurable with this detector tube |
Substance | CorrectionFactor: | No. of pumpstrokes | Measuringrange |
1,2-Dichloroethane | 5.2 | 1 | 104 to 1040ppm |
1,1,2,2-Tetrabromoethane | 0.046 | 4 | 0.92 to 9.2ppm |
1,2,3-Trichloropropane | 1.8 | 4 | 36 to 360ppm |
| Calibration gasgeneration | Diffusion tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 350ppm | 450ppm | - |
