Gastec 174 快速1,3-丁二烯检测检测管 CH2：CHCH：CH2（50~800 ppm）

制造商: Gastec
Model: 174
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技术规格
制造商消息

Indicator: 50 ~ 800 ppm
Measuring Range: 50 ~ 800 ppm, Number of Pump Strokes 1
Sampling Time: per pump stroke
Colour Change:
Reaction Principle:
Coefficient of Variation:
Nr. of tests: 10
Pump: GV-100S/110S

Details

Performance

Measuring Range	50 to 800 ppm
Number of Pump Strokes	1
Correction Factor	1
Sampling Time	1.5 minutes per pump stroke
Detecting Limit	10 ppm (n=1)
Colour Change	Pale yellow → White
Reaction Principle	CH2:CHCH:CH2 + (NH4)2MoO4 + PdSO4 → White product
Coefficient of Variation	10% (for 50 to 200 ppm), 5% (for 200 to 800 ppm)
Shelf Life	3 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

Acetylene, Carbon monoxide	10 ppm	+	Blue
Ammonia, Hydrogen cyanide		+	White
Hydrogen	20%	+	Blue (whole layer)
Hydrogen sulphide	10 ppm	+	Black
Ethylene	1 ppm	+	Blue
Styrene		+	Pale blue