Gastec 1M Quick-measuring Detector tubes Carbon monoxide CO (0.05~4.0%)
Manufacturer: Gastec Model: 1M - Request a Quotation
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Indicator: 0.2 ~5.0%
Measuring Range:
+ 0.05 ~ 0.1%, Number of Pump Strokes 2
+ 0.1 ~ 2.0%, Number of Pump Strokes 1
+ 2.0 ~4.0%, Number of Pump Strokes 1/2
Sampling Time: 1 minute per pump stroke
Colour Change: White → Pale brown
Reaction Principle: 5CO + I2O5 + H2S2O7 → I2
Coefficient of Variation: 10% ( 0.1 ~ 0.5%), 5% (0.5 ~ 2 %)
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 minute per pump stroke | |||
Detecting Limit | 0.01% (n=2) | |||
Colour Change | White → Pale brown | |||
Reaction Principle | 5CO + I2O5 + H2S2O7 → I2 | |||
Coefficient of Variation | 10% (for 0.1 to 0.5 %), 5% (for 0.5 to 2 %) | |||
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 |
Acetylene | 0.1% | + | Blackish brown |
Olefins | 2/3 time | + | Pale brown |
Butane | 0.3% | + | Pale brown (whole layer) |
Propane | 10% | + | Pale brown (whole layer) |
Hexane | 0.1% | + | Pale brown |
Substance | Correction Factor | No. of pump strokes | Measuring Range |
Gasoline | 1 | 1 | 0.1 to 2% |
Calibration gas generation | High pressure gas cylinder method |
TLV-TWA | TLV-STEL | Explosive range |
25 ppm(2014) | - | 12.5 to 74% |
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