Gastec 9P Detector tubes Gas or Vapour Nitrogen dioxide NO2 (0.02 - 0.20 ppm)
ManufacturerGastec(View more products from this manufacturer)
Model9P
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Calibration Range: 0.02 - 0.20 ppm
Measuring Range: 0.02 - 0.20 ppm
Sampling (flow) Rate: 100mL/min
Sampling Volume: 3000mL
Sampling Time: 30 min
Colour Change: White → Orange brown
Nr. of tests: 10
Automatic Gas Sampler: GSP-300FT-2
Specifications
| Calibration Range | 0.02 - 0.20 ppm |
| Measuring range | 0.02 - 0.20 ppm |
| Sampling (flow) Rate | 100mL/min |
| Sampling Volume | 3000mL |
| Sampling Time | 30min |
| Detecting Limit | 0.004 ppm |
| Colour Change | White → Orange brown |
| Corrections for temperature/humidity | Necessary for 0 to 40ºC Unnecessary for R.H.0 to 90% |
| Shelf life | 2 years |
| Accuracy | CV=5-10% (CV: Coefficient of variation = σ: standard deviation / mean value x 100) |
Possibly coexisting substances and their interferences (NOTE)
| Substance(s) | Interference | Colour change by itself |
| Carbon monoxide | No | No | |
| Nitric oxide | No | No | |
| Chlorine |  0.10ppm |
No | Reddish brown from 0.08ppm |
| Ozone | 0.04ppm |
No | Pale yellow from 0.1ppm |
| Carbon dioxide | No | No | |
| Acetone | No | No | |
| p-Dichlorobenzene | No | No | |
| n-decan | No | No | |
| Aromatic hydrocarbons | No | No | |
| Formaldehyde | No | No |
| Calibration gas generation | Permeation tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 0.2 ppm(2014) | - | -- |
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