Phosphine (PH3) Detection Tubes (0.05 to 9.8 ppm)

Phosphine (PH3) Detection Tubes (0.05 to 9.8 ppm)

Gastec Detection Tube No. 7LA measures Phosphine with a Range of 0.05 to 9.8 ppm.

• Measuring Range:
  • 0.05 to 0.1 ppm
  • (0.1) to 1.5 ppm
  • 1.5 to 2.5 ppm
  • 2.5 to 9.8 ppm
• Number of Pump Strokes: 10, 5, 3, 1
• Correction Factor: 1/2, 1, 1.7, 6.5
• Sampling Time: 1.5 minutes per pump stroke
• Detecting Limit: 0.02 ppm (10 pump strokes)
• Changes from Yellow to Red
• Reaction Principle:
  • PH₃ + 3HgCl₂ → P(HgCl)₃ + 3HCl
  • HCl + Base → Chloride
• Relative Standard Deviation: 10% (for 0.1 to 0.4 ppm), 5% (for 0.4 to 1.5 ppm)
• 2 Year Shelf Life
• Store the tubes at cool and dark place.

Possible coexisting substances and their interferences: