Drager Short Term Detection Tubes - Dimethyl Sulphate 0.005/c (Pack of 9)
These short term detection tubes from Drager Safety is for the measurement of Dimethyl Sulphate (0.005/c). Other substances able to be detected include Diethyl Sulphate and Dimethyl Sulphate. This particular pack of tubes contains 9 tubes and has a shelf life of 2 years.
- Measurements in hard-to-reach places can be obtained
- Useful for on-the-spot measurements in particular
- Readings may take between 10 seconds and 15 minutes depending on both the tube and pump
- Variations in concentration levels and contamination of breathing areas are two applications which may use tubes and pumps
- Pre-entry checks in confined space entry applications may use tubes
Application Range | |
Standard Measuring Range: | 0.005 to 0.05 ppm Discoloration compared to color standard. |
Number of Strokes n: | 200 |
Time for Measurement: | approx. 50 min |
Standard Deviation: | ± 30 % |
Color Change: | white - blue |
Ambient Operating Conditions | |
Temperature: | 15 to 30 °C |
Absolute Humidity: | 3 to 15 mg H2O / L |
Reaction Principle | |
Dimethyl sulphate + 4-(4-Nitrobenzyl)-pyridine ä colorless alkylation product colorless alkylation product ä blue reaction product |
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Cross Sensitivity | |
Phosgene and chloroformates cause a yellow discoloration of the indicating layer, and it is impossible to perform a dimethyl sulphate measurement. Alcohols, ketones, aromatics and petroleum hydrocarbons in the TLV range do not affect the indication. | |
Additional Information | |
After carrying out the required 200 pump strokes the reagent ampoule must be broken, the liquid transferred onto the indicating layer and carefully drawn through it using the pump. Wait five minutes before evaluating the indication. The tube must not be exposed to direct sunlight during the 5 minutes waiting period. |