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E-mail
1375312008@qq.com
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Phone
18121126516(微信同号)13301881771
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Address
Building 10, 4th Floor, Block F, No. 1188 Lianhang Road, Minhang District, Shanghai
Shanghai Yudong Electronic Technology Co., Ltd
1375312008@qq.com
18121126516(微信同号)13301881771
Building 10, 4th Floor, Block F, No. 1188 Lianhang Road, Minhang District, Shanghai

| Performance |
MeasuringRange |
20 to 200 ppm |
200 to 400 ppm |
Number of PumpStrokes |
2 |
1 |
CorrectionFactor |
1 |
2.2 |
SamplingTime |
3 minutes per pumpstroke |
|
DetectingLimit |
5 ppm (n=2) |
|
Color Change |
Pink → Paleblue |
|
Reaction Principle |
CH3CH(OH)CH3+ Cr6++ H2SO4→ Cr3+ |
|
| Coefficient ofVariation | 15% (for50 to 200 ppm), 10% (for 200 to 800 ppm) | |
| ShelfLife | 2 Years | |
| Correctionsfor temperature & humidity |
Temperature correction isnecessary | |
| Store the tubes at cool and darkplace. | ||
| Possible coexisting substances and theirinterferences | (NOTE) |
Substance |
Concentration |
Interference |
Change color by itself |
Alcohols |
|
+ |
Pale blue |
Esters,Ketones |
|
No |
No |
| Aliphatic hydrocarbon | No |
No |
|
| Aromatic hydrocarbon | No |
No |
| Othersubstance measurable with this detector tube |
Substance |
Correction Factor |
Pump Strokes |
Measuring Range |
Ethylene glycolMEE |
0.76 |
2 |
15.2 to 152ppm |
1-Methoxy-2-propanol |
0.76 |
2 |
15.2 to 152ppm |
Propylalcohol |
0.68 |
2 |
13.6 to 136ppm |
Ethylene glycolMBE |
1.15 |
2 |
23 to 230 ppm |
Ethylene glycolMME |
1.0 |
2 |
20 to 200ppm |
| Calibration gasgeneration | Diffusion tube method | |
| TLV-TWA | TLV-STEL | Explosive range |
| 200ppm | 400ppm | 2 to12.7% |