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Shanghai Dahuan Environmental Protection Technology Co., Ltd
Nitrogen dioxide NO2 detection tube Indoor gas detector Poison detection tube
NegotiableUpdate on 05/06
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Overview
Nitrogen dioxide NO2 detection tube Indoor environmental gas detector Poison detection tube NO2 detection tube NO2 detection tube is a sealed slender glass tube that presents a specific color due to being filled with specific reagents and coloring agents. When a gas sample containing nitrogen dioxide enters the detection tube, a chemical change occurs, causing a change in color. The scale corresponding to the boundary of observing color changes is the concentration of nitrogen dioxide in the tested sample.
Product Details
Nitrogen dioxide NO2 detection tube Indoor environmental gas detector Poison detection tube
Nitrogen dioxide detection tube NO2
The nitrogen dioxide detection tube is a sealed, slender glass tube that presents a specific color due to being filled with specific reagents and coloring agents. When a gas sample containing nitrogen dioxide enters the detection tube, a chemical change occurs, causing a change in color. The scale corresponding to the boundary of observing color changes is the concentration of nitrogen dioxide in the tested sample.
9L specification:
| Testing Scope | 0.5-30ppm | 30-125ppm | |
| Extraction frequency | 2 times (standard) (200ml) | Once (100ml) | |
| correction factor | 1 | According to the correction table | |
| pumping time | 1 minute | 30 seconds |
Detection line: 0.1ppm (pumping twice)
Color Change: White, Yellow, Orange
Temperature and humidity correction: No temperature correction required
Relative standard deviation: 10% (0.5-3ppm), 5% (3-30ppm)
Validity period: 36 months
reaction principle：NO2+o-Ortho toluidineyellowreactant
This detection tube can detect other gases
| gas name | conversion factor | Extraction frequency | Testing Scope |
| iodine | 0.4 | 2 | 0.2-12ppm |
9P specification:Suitable for indoor air testing (at 20 degrees Celsius, 0.24mg/m3 is approximately equivalent to 0.125ppm)
| Testing Scope | 0.02-0.2ppm |
| Flow setting | 100ml/min(3000ml) |
| conversion factor | 1 |
| Detection Time | 30min |
Detection line: 0.004ppm (3000ml)
Color Change: White, Yellow, Orange
Temperature and humidity correction: No temperature correction required
Relative standard deviation: 10% (0.02-0.06ppm), 5% (0.06-0.2ppm)
Validity period: 30 months
reaction principle：NO2+3,3 ', 5', 5-Tetramethylbenzidine Orange Yellow Reaction Product
Nitrogen dioxide NO2 detection tube Indoor environmental gas detector Poison detection tube
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