Nitrogen Oxides Detection Tubes (0.04 to 16.5 ppm)

Nitrogen Oxides Detection Tubes (0.04 to 16.5 ppm)

Gastec Detection Tube No. 11L measures Nitrogen Oxides with a Range of 0.04 to 16.5 ppm.

• Measuring Range:
  • 0.04 to 0.08 ppm
  • 0.08 to 0.2 ppm
  • 0.2 to 5.0 ppm
  • 5.0 to 16.5 ppm
• Number of Pump Strokes: 8, 4, 2, 1
• Correction Factor: 0.2, 0.4, 1, 3.3
• Sampling Time: 2 minutes per pump stroke
• Detecting Limit: 0.01 ppm (8 pump strokes)
• Reaction Principle:
  • NO + Cr⁶⁺ + H₂SO₄ → NO₂
  • NO₂ + o-Tolidine → Nitroso-o-Tolidine
• Corrections for Temperature & Humidity: Unnecessary
• Relative Standard Deviation: 10% (for 0.2 to 1 ppm), 5% (for 1 to 5 ppm)
• Shelf Life: 3 years
• Changes from White to Yellowish Orange
• 3 Year Shelf Life
• Store the tubes at cool and dark place.

Possible coexisting substances and their interferences: