Description
Dräger Tubes For Short Term Measurements: Toluene Diisocyanate 0.02/A
Dräger Safety offer a massive range of short-term gas detection tubes for the measurement of various gases. This particular set of tubes is for (Toluene Diisocyanate 0.02/A).
The tubes come in a pack of 9 tubes and have a shelf life of 2 years.
Application Range:
| Standard Measuring Range: | 0.02 to 0.2 ppm Discoloration compared to color comparison tube. |
| Number of Strokes n: | 25 |
| Time for Measurement: | approx. 20 min |
| Standard Deviation: | ± 30 % |
| Colour Change: | white to orange |
Ambient Operating Conditions:
| Temperature: | 15 to 30 °C |
| Absolute Humidity | < 20 mg H2O / L |
Reaction Principle:
a) Pyridylpyridinium chloride + NaOH ~> Glutaconaldehyde sodium oletate b) 2,4-TDI (also for 2,6-TDI) + HCI ~> Aromatic amine c) Aromatic amine + glutaconaldehyde ~> orange reaction product
Cross Sensitivity:
Other isocyanates are not indicated. No interference by: 5 ppm aniline 10 ppm benzylamine 5 ppm toluene 20 ppm benzene Mercaptans also discolor the indicating layer..
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