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Indicator: 5 to 60 ppm
Measuring Range:
+ 1.5 to 5 ppm, Number of Pump Strokes 4
+ 5 to 60 ppm, Number of Pump Strokes 2
+ 60 to 240 ppm, Number of Pump Strokes 1
Sampling Time: 1.5 minute per pump stroke
Colour Change: Pink → Pale yellow
Reaction Principle:
+ CH3CON(CH3)2 + NaOH → R-NH2
+ 2R-NH2 + H2SO4 → (R-NH2)2SO4
Coefficient of Variation: 15% (for 5 to 20 ppm), 10% (for 20 to 60 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
| Measuring Range |
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| Number of Pump Strokes |
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| Correction Factor |
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| Sampling Time | 1.5 minutes per pump stroke | |||
| Detecting Limit | 0.5 ppm (n=4) | |||
| Colour Change | Pink → Pale yellow | |||
| Reaction Principle | CH3CON(CH3)2 + NaOH → R-NH2 2R-NH2 + H2SO4 → (R-NH2)2SO4 |
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| Coefficient of Variation | 15% (for 5 to 20 ppm), 10% (for 20 to 60 ppm) | |||
| Shelf Life | 3 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 |
| Amines | + | Pale yellow | |
| Ammomia | + | Pale yellow | |
| Hydrazine | + | Pale yellow |
| Calibration gas generation | Diffusion tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 10 ppm(2014) | - | - |
