品牌
生产厂家厂商性质
所在地
二氧化氮检测管9D NO2 Nitrogen dioxide
面议硫化氢检测管4D H2S Hydrogen sulphide
面议氟化氢检测管17D HF Hydrogen fluoride
面议过氧化氢检测管32D Hydrogen peroxide
面议三氯乙烯检测管132D Trichloroethylene
面议三氯乙烯检测管132D Trichloroethylene Trichloroethylene
面议一氧化碳气体检测管1D CO Carbon monoxide
面议二氧化碳检测管2D Carbon dioxide CO2
面议1,3 -丁二烯检测管174D 1,3-Butadiene
面议甲苯器检测管122DL C6H5CH3 Toluene
面议氨水氨气检测管3DL NH3 Ammonia
面议氨气气体检测管3D NH3 Ammonia
面议
| Performance |
| Measuring Range | 100 to 25000ppm |
| Sampling Hours | 1 to 10 hours |
| Detecting Limit | 0.05 ppm （10hours） |
| Color Change | Yellow→ Brown |
| Reaction Principle | C2H5OH +Cr6++H2SO4 →Cr3+ |
| Coefficient ofVariation | 15%（for 1000 to 3000 ppm-hr）, 10% （for 3000 to 25000ppm-hr） |
| ShelfLife | 3 Year |
| Correctionsfor temperature & humidity | Unnecessary |
| Store the tubes atcool and dark place. | |
| Possible coexisting substances and theirinterferences | （NOTE） |
| Substance | Concentration | Interference | Change color by itself |
| Methanol,Esters | No | No | |
| Isopropyl alcohol | + | Brown |
| Calibration gasgeneration | Diffusion tubemethod | |
| TLV-TWA | TLV-S | Explosive range |
| 1000 ppm | - | 3.3to 19% |