Ozone Detection Tubes (4 to 400 ppm)

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Item #: 18M
MFG: GasTec

UOM: Box of 10

$88.40 Was: $94.84
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Ozone Detection Tubes (4 to 400 ppm)

Gastec Detection Tube No. 18M measures Ozone with a Range of 4 to 400 ppm.

  • Measuring Range:
    • 4 to 20 ppm
    • 20 to 200 ppm
    • 200 to 400 ppm
  • Number of Pump Strokes: 2 to 5, 1, 1/2
  • Correction Factor: 1/2 to 1/5, 1, 1/2
  • Sampling Time: 45 seconds per pump stroke
  • Detecting Limit: 1 ppm (5 pump strokes)
  • Changes from Orange to Pale Yellow
  • Corrections for temperature & humidity: Unnecessary
  • Reaction Principle: O3 + Indicator → Reaction product
  • Coefficient of Variation: 10% (for 20 to 60 ppm), 5% (for 60 to 200 ppm)
  • 3 Year Shelf Life
  • Store the tubes at cool and dark place.

Possible coexisting substances and their interferences:

Substance Interference Changes color by itself to
Chlorine + Pale yellow
Nitrogen dioxide + Pale yellow
Boron trichloride No Red
Arsine No Red
Hydrogen chloride No Red
Hydrogen fluoride No Red
Phosphine No Red