Gastec 118 Quick-measuring Detector tubes Cyclohexanol C6H11OH (5 ~ 100 ppm)
ManufacturerGastec(View more products from this manufacturer)
Model118
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Indicator: 10~100ppm
Measuring Range: 5 to 100 ppm , Number of Pump Strokes 2
Sampling Time: 2 minute per pump stroke
Colour Change: Yellow → Pale blue
Reaction Principle: C6H11OH + Cr6+ + H3PO4 → Cr3+
Coefficient of Variation: 15% (for 5 to 50 ppm), 10% (for 50 to 250 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Performance
| Measuring Range | 5 to 100 ppm |
| Number of Pump Strokes | 2 |
| Correction Factor | 1 |
| Sampling Time | 2 minutes per pump stroke |
| Detecting Limit | 1 ppm (n=2) |
| Colour Change | Yellow → Pale blue |
| Reaction Principle | C6H11OH + Cr6+ + H3PO4 → Cr3+ |
| Coefficient of Variation | 15% (for 5 to 50 ppm), 10% (for 50 to 250 ppm) |
| Shelf Life | 2 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 |
| Cyclic alcohols | + | Pale blue | |
| Aromatic hydrocarbons | + | Pale blue |
| Calibration gas generation | Vaper pressure method |
| TLV-TWA | TLV-STEL | Explosive range |
| 50 ppm(2014) | - | 1.2 to 5.3% |
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