Indicator: 10 ~ 150 ppm
Measuring Range: 10 ~ 150 ppm, Number of Pump Strokes 3
Sampling Time: 2 minutes per pump stroke
Colour Change: Yellow → Pale blue
Reaction Principle: CH3(CH2)3OH + Cr6++ H3PO4 → Cr3+
Coefficient of Variation: 15% (for 2.5 to 30 ppm), 10% (for 30 to 150 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
10 to 150 ppm |
| Number of Pump Strokes |
3 |
| Correction Factor |
1 |
| Sampling Time |
2 minutes per pump stroke |
| Detecting Limit |
1 ppm (n=3) |
| Colour Change |
Yellow → Pale blue |
| Reaction Principle |
CH3(CH2)3OH + Cr6++ H3PO4 → Cr3+ |
| Coefficient of Variation |
15% (for 2.5 to 30 ppm), 10% (for 30 to 150 ppm) |
| Shelf Life |
3 Years |
| Corrections for temperature & humidity |
Temperature correction is necessary |
| Store the tubes at cool and dark place. |
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 |
| 20ppm |
- |
1.4 to 11.2% |
