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如果您对该产品感兴趣的话,可以
产品名称:
甲醛气体检测管91D HCHO
产品型号:
91D
产品展商:
GASTEC
简单介绍
甲醛气体检测管91D HCHO，检测范围Measuring Range 0.1 to 20 ppm Sampling Hours 1 to 10 hours Detecting Limit 0.05 ppm (10 hours) 甲醛气体检测管价格，甲醛气体检测管91D HCHO
甲醛气体检测管91D HCHO的详细介绍
甲醛气体检测管91D HCHO Formaldehyd No.91DHCHO Measuring Range | 0.1 to 20 ppm | Sampling Hours | 1 to 10 hours | Detecting Limit | 0.05 ppm (10hours) | Color Change | Yellow → ReddishBrown | Reaction Principle | 3HCHO +(NH2OH)3H3PO4 →H3PO4
H3PO4 + Base+Phosphate | | Coefficient ofVariation | 10% (for 1 to 20 ppm-hr) | | ShelfLife | 1 Year | Correctionsfor
temperature & humidity | Unnecessary | | Store the tubes inthe refrigerator to keep at 10oC (50oF) orbelow. |
| Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Interference | Change colour byitself to | Aldehydes, Ketones,Acid gases | + | Reddishbrown |
| Othersubstance measurable with this detectortube |
Substance | CorrectionFactor | SamplingTime | MeasuringRange | Acetaldehyde | 1.0 | 1 to 10 hours | 0.1 to 20 ppm | Furfural | 3.0 | 1 to 10 hours | 0.3 to 60 ppm | Methyl ethylketone | 1.25 | 1 to 10 hours | 0.125 to 25ppm |
| Calibration gasgeneration | Diffusion tubemethod |
| TLV-TWA | TLV-STEL | Explosive range | | - | C 0.3ppm | 7.0to 73% |
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