粉碎設備 混合設備 分離設備 濃縮結晶設備 傳質設備 干燥設備 反應設備 換熱設備 制冷設備 空分設備 儲存設備 鍋爐|加熱設備 包裝機械 輸送設備 化工實驗室設備
河南省鑫屬實業有限公司
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% |
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