Gastec 174D 1,3-丁二烯被动发现管CH2:CHCH:CH2(1.3~200 ppm)

Indicator: 10 ~ 200 ppm
Measuring Range: 1.3 ~ 200 ppm
Sampling Hours: 1 to 8 hours
Colour Change: Reddish purple → Pale brown
Reaction Principle: CH2:CHCH:CH2 + MnO4 → Pale brown product
Coefficient of Variation: 10% (for 10 to 200 ppm・hr)
Nr. of tests: 10

Detail

Catalog

Performance
Measuring Range 1.3 to 200 ppm
Sampling Hours 1 to 8 hours
Detecting Limit 1.3 ppm (8 hours)
Colour Change Reddish purple → Pale brown
Reaction Principle CH2:CHCH:CH2 + MnO4 → Pale brown product
Coefficient of Variation 10% (for 10 to 200 ppm・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 Interference Change colour by itself to
Unsaturated hydrocarbons + Pale brown
Other substance measurable with this detector tube
Substance Correction Factor Measuring Range
Ethylene Factor: 1.2 1.5 to 240 ppm
Vinyl chloride Factor: 1.2 1.5 to 240 ppm
Isoprene Factor: 2.0 2.5 to 400 ppm
Trans-1,2-Dichloroethylene Factor: 3.0 3.8 to 600 ppm
Calibration gas generation Permeation tube method
TLV-TWA TLV-STEL Explosive range
2 ppm - 2.0 to 12%

 

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