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Gastec 1D 受身ドールズチューブ一酸化炭素CO(1.04〜2000 ppm)

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Indicator: 50~1000ppm Mendicator: 50~1000ppmMendicator: 50~1000ppm
Measuring Range: 1.04 to 2000 ppm
Sampling Hours:  0.5 to 48 hours
Colour Change: Pale Yellow → Brown
Reaction Principle: CO + Na2Pd(SO3)2 → Pd + CO2 + SO2 + Na2SO3
Coefficient of Variation: 10% (for 50 to 1000 ppm-hr)
Nr. of tests: 10

Catalog

Performance
Measuring Range 1.04 to 2000 ppm
Sampling Hours 0.5 to 48 hours
Detecting Limit 2 ppm (10 hours)
Colour Change Pale Yellow → Brown
Reaction Principle CO + Na2Pd(SO3)2 → Pd + CO2 + SO2 + Na2SO3
Coefficient of Variation 10% (for 50 to 1000 ppm-hr)
Shelf Life 2 Years
Corrections for temperature & humidity Unnecessary
Store the tubes at cool and dark place.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Nitrogen dioxide ≧ 5 ppm No
Chlorine   No No
Hydrogen sulphide   + Reddish brown
Calibration gas generation High pressure gas cylinder method
TLV-TWA TLV-STEL Explosive range
25 ppm - 12.5 to 74%

 

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