Draeger Tube, Nitric Acid 1/a 1-50ppm
DRAEGER SAFETY INC.
/ Model #6728311
Details
Draeger Tube - Nitric Acid 1/a
Order No. 67 28 311
| Application Range | |
| Standard Measuring Range | 5 to 50 / 1 to 15 ppm |
| Number of Strokes n: | 10 / 20 |
| Time for Measurement: | approx. 2 minutes / approx. 4 minutes |
| Standard Deviation: | ± 10 to 15% |
| Color Change: | blue to yellow |
| Ambient Operating Conditions | |
| Temperature: | 5 to 40° C ~ 41 to 104° F |
| Absolute Humidity: | 3 to 15 mg H2O / L |
| Reaction Principle | |
| HNO3 + bromophenol blue → yellow reaction product | |
| Cross Sensitivity | |
| Hydrogen sulfide and nitrogen dioxide in the TLV range do not interfere, however, 50 ppm nitrogen dioxide gives an indication similar to 3 ppm nitric acid. It is impossible to measure nitric acid in the presence of other mineral acids. Chlorine discolors the indication layer grey, and this makes it difficult to evaluate the nitric acid indication. If chlorine is present in the TLV range, this leads to slightly higher nitric acid indications. | |
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