Isopropyl alcohol |
NO.113LL |
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Measuring Range |
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Number of Pump Strokes |
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Correction Factor |
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Sampling Time | 3 minutes per pump stroke | ||
Detecting Limit | 5 ppm (n=2) | ||
Colour Change | Pink → Pale blue | ||
Reaction Principle | CH3CH(OH)CH3 + Cr6++ H2SO4 → Cr3+ | ||
Coefficient of Variation | 15% (for 20 to 60 ppm), 10% (for 60 to 200 ppm) | ||
Shelf Life | 2 Years | ||
Corrections for temperature & humidity | Temperature correction is necessary | ||
Store the tubes at cool and dark place. |
Substance | Concentration | Interference | Change colour by itself to |
Alcohols | + | Pale blue | |
Esters,Ketones | No | No | |
Aliphatic hydrocarbon | No | No | |
Aromatic hydrocarbon | No | No |
Substance | Correction Factor | No. of pump strokes | Measuring Range |
Ethylene glycol MEE | 0.76 | 2 | 15.2 to 152 ppm |
1-Methoxy-2-propanol | 0.76 | 2 | 15.2 to 152 ppm |
Propyl alcohol | 0.68 | 2 | 13.6 to 136 ppm |
Ethylene glycol MBE | 1.15 | 2 | 23 to 230 ppm |
Ethylene glycol MME | 1.0 | 2 | 20 to 200 ppm |
Calibration gas generation | Diffusion tube method |
TLV-TWA | TLV-STEL | Explosive range |
200 ppm | 400 ppm | 2 to 12.7% |