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Gastec 2D 受身ドールズチューブ二酸化炭素CO2(0.02〜12%)

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Indicator: 0.2~6%
Measuring Range:  0.02 ~12%
Sampling Hours: 0.5 to 10
Colour Change: Pale Red → Yellow
Reaction Principle: CO2 + 2KOH → K2CO3 + H2O
Coefficient of Variation: 10% (for 0.2 to 6.0 %-hr)
Nr. of tests: 10

Catalog

Performance
Measuring Range 0.02 to 12%
Sampling Hours 0.5 to 10 hours
Colour Change Pale Red → Yellow
Reaction Principle CO2 + 2KOH → K2CO3 + H2O
Coefficient of Variation 10% (for 0.2 to 6.0 %-hr)
Shelf Life 2 Years
Corrections for temperature & humidity Temperature correction is necessary
Store the tubes at cool and dark place.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Ammonia 500 ppm No No ( ≦ 500ppm)
Hydrogen chloride 300 ppm No No ( ≦ 300 ppm)
Chlorine 10 ppm No No ( ≦ 5 ppm)
Hydrogen cyanide 50 ppm No No ( ≦ 30 ppm)
sulphur dioxide 15 ppm No No ( ≦ 15 ppm)
Nitrogen dioxide 10 ppm No No ( ≦ 10 ppm)
Hydrogen sulphide 50 ppm No No ( ≦ 30 ppm)
Calibration gas generation High pressure gas cylinder method
TLV-TWA TLV-STEL Explosive range
5000 ppm (2014) 30000 ppm (2014) -

 

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