Sulfur Dioxide (SO2) Detection Tubes (1.25 to 200 ppm)

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Item #: 5L
MFG: GasTec
UOM: Box of 10
Min Order: 0
Order Qty: Must order in multiples of 1
$83.00 Was: $94.10
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Product Details

Sulfur Dioxide (SO2) Detection Tubes (1.25 to 200 ppm)

Gastec Detection Tube No. 5L measures Sulfur Dioxide with a Range of 1.25 to 200 ppm.

  • Measuring Range:
    • 1.25 to 2.5 ppm
    • 2.5 to 5 ppm
    • 5 to 100 ppm
    • 100 to 200 ppm
  • Number of Pump Strokes: 4, 2, 1, 1/2
  • Correction Factor: 1/4, 1/2, 1, 2
  • Sampling Time: 45 seconds per pump stroke
  • Detecting Limit: 0.25 ppm (4 pump strokes)
  • Changes from Blue to Yellow
  • Corrections for temperature & humidity: Unnecessary
  • Reaction Principle:
    • SO2 + BaCl2 + H2O → BaSO3 + 2HCl
    • HCl + Base → Chloride
  • Relative Standard Deviation: 10% (for 5 to 20 ppm), 5% (for 20 to 100 ppm)
  • 3 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
Nitrogen dioxide ≧ 1/1 + Pale purple
Carbon dioxide No No
Carbon monoxide No No
Hydrogen sulfide No No
Nitric oxide No No

Sulfur Dioxide (SO2) Detection Tubes (1.25 to 200 ppm)

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