产品介绍
醋酸乙烯酯检测管143 Vinyl acetate的详细介绍
醋酸乙烯酯检测管143 Vinyl acetate
Vinyl acetate No.143
CH3CO2CH:CH2
|
Measuring Range
|
5 to 10 ppm
|
10 to 100 ppm
|
100 to 250ppm
|
|
Number of Pump Strokes
|
4
|
2
|
1
|
|
Correction Factor
|
1/2
|
1
|
2.5
|
|
SamplingTime
|
45 seconds per pumpstroke
|
|
DetectingLimit
|
1 ppm (n=4)
|
|
ColorChange
|
White → Brown
|
|
ReactionPrinciple
|
CH3CO2CH:CH2+C6H3(CH3)3+ H2S2O7 → Condensation Polymer (Brown)
|
| Coefficient ofVariation |
15% (for10 to 20 ppm), 10% (for 20 to 100 ppm) |
| ShelfLife |
3Years |
Corrections for
temperature & humidity |
Unnecessary |
| Store the tubes at cool and darkplace. |
| Possible coexisting substances and theirinterferences |
(NOTE) |
|
Substance
|
Concentration
|
Interference
|
Change color by itself
|
|
Aldehydes
|
- |
Plus error
|
Brown
|
|
Ketones
|
- |
Plus error
|
Brown
|
|
Ethylene
|
1000ppm
|
Plus error
|
Yellow
|
|
Vinylchloride
|
500ppm
|
Plus error
|
Yellow
|
| Othersubstance measurable with this detector tube |
| Calibration gasgeneration |
Diffusion tubemethod |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 10ppm |
15ppm |
2.6 to13.4% |
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