Indicator: 0.3 to 5 ppm
Measuring Range:
+ 0.15 to 0.3 ppm, Number of Pump Strokes 10
+0.3 to 5 ppm, Number of Pump Strokes 5
Sampling Time: 1 minute per pump stroke
Colour Change: Pale yellow → Purple
Reaction Principle: PH3 + Gold- compound → Colloidal gold
Coefficient of Variation: 10% (for 0.3 to 1 ppm), 5% (for 1 to 5 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
| 0.15 to 0.3 ppm |
0.3 to 5 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
1 minute per pump stroke |
| Detecting Limit |
0.04 ppm (n = 10) |
| Colour Change |
Pale yellow → Purple |
| Reaction Principle |
PH3 + Gold- compound → Colloidal gold |
| Coefficient of Variation |
10% (for 0.3 to 1 ppm), 5% (for 1 to 5 ppm) |
| Shelf Life |
3 Years |
| Corrections for temperature & humidity |
Unnecessary |
| Store the tubes at cool and dark place. |
Possible coexisting substances and their interferences
(NOTE)
| Substance |
Concentration |
Interference |
Change colour by itself to |
| Arsine |
|
+ |
Purple |
| Germane |
|
+ |
Purple |
| Hydrogen selenide |
|
+ |
Purple |
| Hydrogen sulphide |
|
+ |
Purple |
| Calibration gas generation |
High pressure gas cylinder method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 0.3 ppm |
1 ppm |
|
