品牌
生产厂家厂商性质
郑州市所在地
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% |