Nitrogen Dioxide (NO2) Detection Tubes (0.5 to 125 ppm)

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Item #: 9L
MFG: GasTec
UOM: Box of 10
Min Order: 0
Order Qty: Must order in multiples of 1
$79.48 Was: $90.25
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Product Details

Nitrogen Dioxide (NO2) Detection Tubes (0.5 to 125 ppm)

Gastec Detection Tube No. 9L measures Nitrogen Dioxide with a Range of 0.5 to 125 ppm.

  • Measuring Range: 0.5 to 30 ppm, 30 to 125 ppm
  • Number of Pump Strokes: 2, 1
  • Correction Factor: 1, by scale
  • Sampling Time: 30 seconds per pump stroke
  • Detecting Limit: 0.1 ppm (2 pump strokes)
  • Changes from White to Yellowish Orange
  • Corrections for temperature & humidity: Unnecessary
  • Reaction Principle: NO2 + o-Tolidine → Nitroso-o-Tolidine
  • Relative Standard Deviation: 10% (for 0.5 to 10 ppm), 5% (for 10 to 30 ppm)
  • 3 Year Shelf Life
  • Store the tubes at cool and dark place.

Possible coexisting substances and their interferences:

Substance Concentration Interference Changes color by itself to
Bromine, Chlorine ≧ 1/5 + Yellowish orange
Nitric oxide ≧ 50 ppm Unclear demarcation Pale red
Ammonia No No
Carbon dioxide No No
Carbon monoxide No No
Organic gases and vapor No No
Sulfur dioxide ≧ 10 ppm - (Bleaching) No

Other substance measurable with this detector tube:

Substance: Correction Factor: No of Pump Strokes: Measuring Range:
Iodine 0.4 2 0.2 to 12 ppm

Nitrogen Dioxide (NO2) Detection Tubes (0.5 to 125 ppm)

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