Hydrogen Sulfide (H2S) Detection Tubes (0.1 to 4.0%)

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Item #: 4HH
MFG: GasTec

UOM: Box of 10

$74.93 Was: $86.48
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Hydrogen Sulfide (H2S) Detection Tubes (0.1 to 4.0%)

Gastec Detection Tube No. 4HH measures Hydrogen Sulfide with a Range of 0.1 to 4%.

  • Measuring Range: 0.1 to 2%, 2 to 4%
  • Number of pump strokes: 1, 1/2
  • Correction Factor: 1, 2
  • Sampling Time: 45 seconds per pump stroke
  • Detecting Limit: 0.01% (1 pump stroke)
  • Changes from Pale Blue to Blackish Brown
  • Reaction Principle: H2S + CuSO4 → CuS + H2SO4
  • Relative Standard Deviation: 10% (for 0.1 to 0.6 %), 5% (for 0.6 to 2 %)
  • 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
Ammonia Two layers (Blackish brown & dark blue) Dark blue
Mercaptans ≧ 1% + No
Sulfur dioxide ≧ 0.5% - No