Gastec 124L Quick-measuring Detector tubes Styrene C6H5CH:CH2 (2-100ppm)
Manufacturer: Gastec Model: 124L - Contact
See more: Equipment Calibration-Inspection & Repair Service
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Indicator: 2 to 25 ppm
Measuring Range:
+ 2 to 25 ppm, Number of Pump Strokes 4
+ 25 to 100 ppm, Number of Pump Strokes 1
Sampling Time: 30 seconds per pump stroke
Colour Change: White → Yellow
Reaction Principle: C6H5CH:CH2+ H2S2O7 → Condensation Polymer
Coefficient of Variation: 10% (for 2 to 5 ppm), 5% (for 5 to 25 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 | 30 seconds per pump stroke | ||
Detecting Limit | 0.5 ppm (n=4) | ||
Colour Change | White → Yellow | ||
Reaction Principle | C6H5CH:CH2+ H2S2O7 → Condensation Polymer | ||
Coefficient of Variation | 10% (for 2 to 5 ppm), 5% (for 5 to 25 ppm) | ||
Shelf Life | 3 Years | ||
Corrections for temperature & humidity | Unnecessary | ||
Store the tubes at cool and dark place. |
Substance | Concentration | Interference | Change colour by itself to |
Alcohols, Esters | 10 times | + (Bleaching) | No |
Aldehydes, Ketones | 10 times | + (Bleaching) | No |
Butadiene | 5 ppm | + (Bleaching) | Dark brown |
Substance | Correction Factor | No. of pump strokes | Measuring Range |
Divinyl benzene | 0.6 | 3 | 1 to 15 ppm |
Calibration gas generation | Diffusion tube method |
TLV-TWA | TLV-STEL | Explosive range |
20 ppm(2014) | 40 ppm(2014) | 1.1 to 6.1% |
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