Phosphine (PH3) Detection Tubes (2.5 to 1000 ppm)

Phosphine (PH3) Detection Tubes (2.5 to 1000 ppm)

Gastec Detection Tube No. 7J measures Phosphine with a Range of 2.5 to 1000 ppm.

• Measuring Range:
  • 2.5 to 25 ppm
  • (25) to 500 ppm
  • 500 to 1000 ppm
• Number of Pump Strokes: 2 to 10, 1, 1/2
• Correction Factor: 1/2 to 1/10, 1, 2
• Sampling Time: 1 minute per pump stroke
• Detecting Limit: 1 ppm (10 pump strokes)
• Changes from White to Pale Yellow
• Corretions for temperature & humidity: Unnecessary
• Reaction Principle: 2PH₃ + 6HgCl₂ + 3H₂O → Hg₃P₂･3HgCl₂･3H₂O + 6HCl
• Relative Standard Deviation: 10% (for 2.5 to 100 ppm), 5% (for 100 to 500 ppm)
• 3 Year Shelf Life
• Store the tubes at cool and dark place.

Possible coexisting substances and their interferences: