河南省鑫屬實業(yè)有限公司
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產(chǎn)品型號91D
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更新時間:2026-03-11 13:17:56瀏覽次數(shù):702次
聯(lián)系我時,請告知來自 儀表網(wǎng)甲醛氣體檢測管91D HCHO,檢測范圍Measuring Range 0.1 to 20 ppm Sampling Hours 1 to 10 hours Detecting Limit 0.05 ppm (10 hours) 甲醛氣體檢測管價格,
甲醛氣體檢測管91D HCHO,檢測范圍Measuring Range 0.1 to 20 ppm Sampling Hours 1 to 10 hours Detecting Limit 0.05 ppm (10 hours) 甲醛氣體檢測管價格,甲醛氣體檢測管91D HCHO
| Performance |
| 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 |
| 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-S | Explosive range |
| - | C 0.3ppm | 7.0to 73% |
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