Phosphine 2.5-100 ppm Detection Tubes

There are no reviews yet. | Write a review
Item #: GT-7
MFG: GasTec
UOM: Box of 10
Min Order: 0
Order Qty: Must order in multiples of 1
$86.93 Was: $93.27
View additional buying options
Product Details

Phosphine 2.5-100 ppm Detection Tubes

Gastec Detection Tube No. 7 measures Phosphine with a Range of 2.5 to 100 ppm.

  • Measuring Range:
    • 2.5 to 5 ppm
    • 5 to 50 ppm
    • 50 to 100 ppm
  • No. of Pump Strokes: 4, 2, 1
  • Correction Factor: 1/2, 1, 2
  • Sampling Time: 6 min, 3 min, 1.5 min
  • Detecting Limit: 0.5ppm (4 pump strokes)
  • Color Change: White to Pale Yellow
  • Correction for Temperature and Humidity: Unnecessary
  • Relative Standard Deviation: 10 % (for 5 to 10 ppm), 5 % (for 10 to 50 ppm)
  • Shelf Life: 3 years
  • Reaction Principle: 3 years

Possible coexisting substances and their interferences:

Substance Concentration Interference Changes color by itself to
Hydrogen sulfide ≧ 10 ppm + Blackish brown
Arsine ≧ 20 ppm + Brown
Hydrogen selenide ≧ 20 ppm + Brown

Phosphine 2.5-100 ppm Detection Tubes

Reaction Principle:

2PH3+6HgCl2 + 3H20 to Hg3P2*3HgCl2*3H20 + 6HCl

Possible coexisting substances and their interference:

Substance: Concentration: Interference: Changes color by itself to:
Hydrogen Sulphide ≧ 10 ppm Blackish brown
Arsine ≧ 20 ppm
Hydrogen Selenide ≧ 20 ppm Brown

Phosphine 2.5-100 ppm Detection Tubes

There are no reviews yet.