Draeger 6728821 Hydrogen Sulfide 2/a Detector Tubes (10 tests per box)

Application Range:

• Standard Measuring Range: 20 to 200 / 2 to 20 ppm
• Number of Strokes n: 1 / 10
• Time for Measurement: Approx. 20 sec / 3.5 min
• Standard Deviation: ± 5 to 10 %
• Color Change: White → Pale Brown

Ambient Operating Conditions:

• Temperature: 0 to 40 °C
• Absolute Humidity: 3 to 30 mg H2O / L

Reaction Principle:

• H2S + Hg2+ → HgS + 2H+

Cross Sensitivity:

• No interference by:
  • 200 ppm sulfur dioxide
  • 100 ppm hydrochloric acid
  • 100 ppm ethyl mercaptan