Indicator: 5 to 80 ppm
Measuring Range:
+ 5 to 80 ppm, Number of Pump Strokes 1
+ 80 to 232 ppm, Number of Pump Strokes 1/2
Sampling Time: 2 minute per pump stroke
Colour Change: Pale yellow → Pale blue
Reaction Principle: C4H8O + Cr6+ + H3PO4 → Cr3+
Coefficient of Variation: 10% (for 5 to 10 ppm), 5% (for 10 to 80 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
| 5 to 80 ppm |
80 to 232 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
2 minutes per pump stroke |
| Detecting Limit |
1.4 ppm (n=1) |
| Colour Change |
Pale yellow → Pale blue |
| Reaction Principle |
C4H8O + Cr6+ + H3PO4 → Cr3+ |
| Coefficient of Variation |
10% (for 5 to 10 ppm), 5% (for 10 to 80 ppm) |
| Shelf Life |
1 Years |
| Corrections for temperature & humidity |
Temperature correction is necessary |
| Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below. |
Possible coexisting substances and their interferences
(NOTE)
| Substance |
Concentration |
Interference |
Change colour by itself to |
| Calibration gas generation |
Diffusion tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 50 ppm (2014) |
100 ppm (2014) |
2 to 11.8% |
30ppm
200ppm
