品牌
生产厂家厂商性质
郑州市所在地
| Performance |
| Measuring Range | 0.2 to 200 ppm |
| Sampling Hours | 1 to 48 hours |
| Detecting Limit | 0.2 ppm （10hours） |
| Color Change | White→ Brown |
| Reaction Principle | H2S + Pb（CH3COO）2 → PbS +2CH3COOH |
| Coefficient ofVariation | 10%（for 10 to 200 ppm-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 |
| Nitrogendioxide | 5 ppm | - | No |
| Ammonia | 25 ppm | No | No |
| Chlorine | 1 ppm |
No | No |
| sulphur dioxide | 5 ppm | No | No |
| Calibration gasgeneration | Diffusion tubemethod | |
| TLV-TWA | TLV-S | Explosive range |
| 10 ppm | 15 ppm | 4.0to 44% |
