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

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Item #: 7J
MFG: GasTec
UOM: Box of 10
Min Order: 0
Order Qty: Must order in multiples of 1
$88.40 Was: $94.84
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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:

Substance Concentration Interference Changes color by itself to
Hydrogen sulfide ≧ 1/5 + Blackish brown
Arsine ≧ 1/3 + Brown
Hydrogen selenide ≧ 1/5 + Brown