Nitrogen Oxides Detection Tubes (50 to 2500 ppm)

There are no reviews yet. | Write a review
Item #: 11HA
MFG: GasTec
UOM: Box of 10
Min Order: 0
Order Qty: Must order in multiples of 1
$94.13 Was: $103.59
View additional buying options
Product Details

Nitrogen Oxides Detection Tubes (50 to 2500 ppm)

Gastec Detection Tube No. 11HA measures Nitrogen Oxides with a Range of (50) to 2500 ppm.

  • Measuring Range: (50) to 2500 ppm
  • No. of Pump Strokes: 1 (100 ml)
  • Correction Factor: 1
  • Sampling time: 1.5 minutes per pump stroke
  • Detecting Limit: 10 ppm (1 pump stroke)
  • Changes from White to Green
  • Corrections for temperature & humidity: Unnecessary
  • Reaction Principle:
    • NO + Cr6+ + H2SO4 → NO2
    • NO2 + (C6H5)2NH → C6H5NHC6H4NO
  • Relative Standard Deviation: 10% (for 50 to 600 ppm), 5% (for 600 to 2500 ppm)
  • 2 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
Hydrogen chloride ≧ 500 ppm Unclear demarcation Bluish purple at 100 ppm
Ozone ≧ 200 ppm Unclear demarcation (Two layers) Brown
Sulfur dioxide No No
Hydrogen sulfide No No
Nitric oxide is oxidized to form nitrogen dioxide. If organic solvent of high concentration is coexisting, oxidising agent is deteriorated to produce minus error for Nitric oxide concentration.

Nitrogen Oxides Detection Tubes (50 to 2500 ppm)

There are no reviews yet.