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.