产品分类
PRODUCT CENTER
销售电话：时经理
18121126516
021-64835787
丙烯腈气体检测管191L Acrylonitrile
Acrylonitrile No.191L
CH2:CHCN
| Performance |
MeasuringRange | 0.1 to 0.2ppm | 0.2 to 6.0 ppm | 6.0 to 18.0ppm |
Number of PumpStroke | 4 | 2 | 1 |
CorrectionFactor | 1/2 | 1 | 3 |
Sampling Time | 3 minutes per pumpstroke | ||
Detecting Limit | 0.05 ppm (n=4) | ||
Color Change | Yellow → Pink | ||
Reaction Principle | Pretreatmenttube: CH2:CHCN + Cr6+ +H2SO4 →HCN | ||
| Coefficient ofVariation | 10% (for 0.25 to 1ppm), 5% (for 1 to 6 ppm) | ||
| ShelfLife | 3Years | ||
| Correctionsfor temperature & humidity | Unnecessary | ||
| Store the tubes at cool and darkplace. | |||
| Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Concentration | Interference | Change color by itself |
Hydrogenchloride | - | No effect | Nodiscoloration |
Hydrogencyanide | - | No effect | Nodiscoloration |
Nitriles( | - | Plus error | Discolor pinkstain |
Acetonecyanohidrin | - | Plus error | Discolor pinkstain |
Alcohols, Esters,Ketones | - | No effect | Nodiscoloration |
Aromatichydrocarbons | - | No effect | Nodiscoloration |
C3)| Othersubstance measurable with this detector tube |
Substance | CorrectionFactor | No. of PumpStrokes | MeasuringRange |
n-Butyronitrile | 30 | 1 | 6 to 180 ppm |
2-Methyl-3-butenenitrile | 2.0 | 2 | 0.4 to 12 ppm |
2-Pentenenitrile | 1.2 | 2 | 0.24 to 7.2ppm |
3-Pentenenitrile | 2.0 | 2 | 0.4 to 12ppm |
| Calibration gasgeneration | Diffusion tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 2ppm | - | 3 to17% |