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

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

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

• Measuring Range:
  • 1 to 2%
  • 2 to 20%
  • 20 to 40%
• Number of Pump Strokes: 2, 1, 1/2
• Correction Factor: 1/2, 1 , 2
• Sampling Time: 1.5 minutes per pump stroke
• Detecting Limit: 0.2% (2 pump strokes)
• Changes from Pale Blue to Blackish Brown
• Corrections for temperature & humidity: Unnecessary
• 3 Year Shelf Life
• Reaction Principle: H₂S + CuSO₄ → CuS + H₂SO₄
• Relative standard deviation: 10% (for 2 to 6 %), 5% (for 6 to 20 %)
• Store the tubes at cool and dark place.

Possible coexisting substances and their interferences: