Gastec 174D 受身ドールズチューブ1,3-ブタジエン CH2:CHCH:CH2（1.3〜200 ppm）

生産者: Gastec
Model: 174D
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技術情報
生産者情報

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

Details

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