| Acrolein | CH2:CHCHO | NO.93 | |
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| Performance |
|
Measuring Range |
3.3 to 10ppm |
10 to 800ppm |
|
Number of Pump Strokes |
4 |
2 |
|
Correction Factor |
1/3 |
1 |
|
Sampling Time |
2 minutes per pump stroke |
|
|
Detecting Limit |
2 ppm (n=4) |
|
|
Color Change |
Yellow |
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|
Reaction Principle |
3CH2CHCHO + (NH2OH)3¥H3PO4 |
|
| Coefficient of Variation | 10% (for 10 to 200 ppm), 5% (for 200 to 800 ppm) | |
| Shelf Life | 2 Years | |
| Corrections for temperature & humidity |
Temperature correction is necessary | |
| Store the tubes in the refrigerator to keep at 10oC (50oF) or below | ||
| Possible coexisting substances and their interferences | (NOTE) |
|
Substance |
Concentration |
Interference |
Change color by itself |
|
Ammonia |
- |
Minus error |
No discoloration |
|
Sulfur dioxide |
1/5 time |
Plus error |
No discoloration |
|
Acetaldehyde |
1/5 time |
Plus error |
Produces red stain |
|
Acetone |
1 time |
Plus error |
Produces red stain |
|
Methyl Ethyl Ketone |
3 times |
Plus error |
Produces red stain |
| Other substance measurable with this detector tube |
|
Substance |
Correction Factor |
Pump Strokes |
Measuring range |
|
Formaldehyde |
25 |
1 |
250 to 20000 ppm |
| Calibration gas generation | Diffusion tube method | |
| TLV-TWA | TLV-STEL | Explosive range |
| - | C 0.1ppm | 2.8 to 31% |
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| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
Red
H3PO4 + Base
Phosphate