Oxygen (O2) Detection Tubes ( 3 to 24%)

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Item #: 31B
MFG: GasTec
UOM: Box of 5
Min Order: 0
Order Qty: Must order in multiples of 1
$80.95 Was: $91.91
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Product Details

Oxygen (O2) Detection Tubes ( 3 to 24%)

Gastec Detection Tube No. 31B measures Oxygen with a Range of 3 to 24 %.

  • Measuring Range: 3 to 6 %, 6 to 24 %
  • Number of Pump Strokes: 1, 1/2
  • Correction Factor: 1/2, 1
  • Sampling Time: 1 minute per pump stroke
  • Detecting Limit: 2 % (1 pump stroke)
  • Color Change: Black → White
  • Corrections for temperature & humidity: Unnecessary
  • Reaction Principle: O2 + 4TiCl3 + 6H2O → 4TiO2 + 12HCl
  • Relative Standard Deviation: 5 % (for 6 to 24 %)
  • 3 Year Shelf Life
  • Store the tubes at cool and dark place.
  • If more than 40% carbon dioxide is coexisted, the tube reading will be 1% higher than the true concentration. (At 21% oxygen concentration tube 31B indicates 22%.)

Possible coexisting substances and their interferences:

Substance Concentration Interference Changes color by itself to
Carbon dioxide ≧ 40 % + No
Carbon monoxide No No
Hydrogen chloride is trapped in the HCl filter layer.

Oxygen (O2) Detection Tubes ( 3 to 24%)

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