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简单介绍：
磷化氢气体检测管7L Phosphine PH3，Measuring Range 0.15 to 0.3 ppm 0.3 to 5 ppm，二氧化碳、氯气、氯化氢、氮氧化物、碳氢化合物总量、丙酮、二甲苯、丁酮、甲苯、磷化氢、二氧化氮、三氯乙稀、氰化氢、氯乙稀、硫醇、二氧化氯、溴化甲、臭氧、丁烷、汽油、柴油、甲醛气体检测管等
详情介绍：
磷化氢气体检测管7L Phosphine PH3
Phosphine No.7L
PH3
| Performance |
Measuring Range | 0.15 to 0.3ppm | 0.3 to 5 ppm |
Number of Pump Strokes | 10 | 5 |
Correction Factor | 1/2 | 1 |
Sampling Time | 1 minute per pumpstroke | |
Detecting Limit | 0.04 ppm (n =10) | |
Color Change | Pale yellow →Purple | |
Reaction Principle | PH3 + Gold- compound → Colloidal gold | |
| Coefficient ofVariation | 10% (for0.3 to 1 ppm), 5% (for 1 to 5 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 |
Arsine | - | Plus error | Produces purplestain |
Germane | - | Plus error | Produces purplestain |
Hydrogenselenide | - | Plus error | Produces purplestain |
Hydrogensulfide | - | Plus error | Produces purplestain |
| Othersubstance measurable with this detector tube |
| Calibration gasgeneration | High pressure gascylinder method | |
| TLV-TWA | TLV-STEL | Explosive range |
| 0.3ppm | 1ppm | - |