Hydrogen Sulfide (H2S) Detection Tubes (1 to 40 ppm)

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Item #: 4LK
MFG: GasTec
UOM: Box of 10
Min Order: 0
Order Qty: Must order in multiples of 1
$75.28 Was: $85.28
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Product Details

Hydrogen Sulfide (H2S) Detection Tubes (1 to 40 ppm)

Gastec Detection Tube No. 4LK measures Hydrogen Sulfide with a Range of 1 to 40 ppm.

  • Measuring Range:
    • 1 to 2 ppm
    • 2 to 20 ppm
    • 20 to 40 ppm
  • Number of Pump Strokes: 2, 1, 1/2
  • Correction Factor: 1/2, 1, 2
  • Sampling Time: 1 minute per pump stroke
  • Detecting Limit: 0.25 ppm (2 pump strokes)
  • Changes from White to Brown
  • Corrections for temperature & humidity: Unnecessary
  • Reaction Principle: H2S + Pb(CH3COO)2 → PbS + 2CH3COOH
  • Relative Standard Deviation: 10% (for 2 to 6 ppm), 5% (for 6 to 20 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
Ozone ≧ 10 ppm Bleaching No
Sulfur dioxide ≧ 1/2 + No
Nitrogen dioxide ≧ 1/4 - No
Mercaptans No No

Hydrogen Sulfide (H2S) Detection Tubes (1 to 40 ppm)

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