Tetrahydrofuran Detection Tubes (20 to 800 ppm)

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Item #: 159
MFG: GasTec

UOM: Box of 10

$97.21 Was: $104.28
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Tetrahydrofuran Detection Tubes (20 to 800 ppm)

Gastec Detection Tube No. 159 measures Tetrahydrofuran with a Range of 20-800 ppm.

  • Measuring Range:
    • 20 to 50 ppm
    • 50 to 800 ppm
  • Number of Pump Strokes: 2, 1
  • Correction Factor: 0.4, 1
  • Sampling Time: 3 minutes per pump stroke
  • Detecting Limit: 2 ppm (2 pump strokes)
  • Changes from Pale vermilion to Pale blue
  • Corrections for temperature & humidity: Temperature correction is necessary
  • 3 Year Shelf
  • Reaction Principle: C4H8O + Cr6+ + H2SO4 → Cr3+
  • Relative Standard Deviation: 15% (for 50 to 200 ppm), 10% (for 200 to 800 ppm)
  • Store the tubes at cool and dark place.

Possible coexisting substances and their interferences:

Substance Interference Changes color by itself to
Alcohols + Pale blue

Other substance measurable with this detector tube:

Substance: Correction Factor: No. of Pump Strokes: Measuring Range:
1,4-Dioxane by scale 2 25 to 140ppm