Gastec CO Gastec 1L Quick-measuring Detector tubes Carbon monoxide CO (2.2~2000ppm)
Manufacturer: Gastec Model: CO Gastec 1L - Request a Quotation
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Indicator: 50~1000ppm
Measuring Range:
+ 2.5 to 25 ppm, Number of Pump Strokes 2 to 10
+ 25 to 1000 ppm, Number of Pump Strokes 1
+ 1000 to 2000 ppm, Number of Pump Strokes 1/2
Sampling Time: 1 minutes per pump stroke
Colour Change: Yellow → Blackish brown
Reaction Principle: CO + Na2Pd(SO3)2 → Pd + CO2 + SO2+Na2SO3
Coefficient of Variation: 0% ( 25 ~ 300 ppm), 5% ( 300 ~ 1000 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 minute per pump stroke | |||
Detecting Limit | 1 ppm (n=10) | |||
Colour Change | Yellow → Blackish brown | |||
Reaction Principle | CO + Na2Pd(SO3)2 → Pd + CO2 + SO2+Na2SO3 | |||
Coefficient of Variation | 10% (for 25 to 300 ppm), 5% (for 300 to 1000 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 |
Acetylene | 1/50 time | + | Dark brown |
Ethylene | 2000 ppm | No | Brown (whole layer) |
Hydrogen | 5000 ppm | + | Dark brown (whole layer)(1%) |
sulphur dioxide | 1/10 time | + | Dark brown |
Nitrogen dioxide | 40 ppm | + | Red (60 ppm) |
Carbon disulphide | 1/50 time | + | Dark brown |
Halogens | 1/5 time | + | Dark brown |
Mercaptans | 1/5 time | + | Dark brown |
Hydrogen sulphide | 1/5 time | + | Dark brown |
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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