Gastec 140 脂肪烃气体检测管 CH 2 Cl 2(6~3000ppm)

Indicator: 20 to 1000 ppm
Measuring Range: 
+ 6 to 20 ppm, Number of Pump Strokes 2
+ 20 to 1000 ppm, Number of Pump Strokes 1
+ 1000 to 3000 ppm, Number of Pump Strokes 1/2
Sampling Time: 2 minute per pump stroke
Colour Change: Yellow → Dark brown
Reaction Principle: Aliphatic Hydrocarbons + Cr6+ + H2SO4 → Cr3+
Coefficient of Variation: 10% (for 20 to 1000 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range
6 to 20 ppm 20 to 1000 ppm 1000 to 3000 ppm
Number of Pump Strokes
2 1 1/2
Correction Factor
0.3 1 3
Sampling Time 2 minutes per pump stroke
Detecting Limit 1 ppm (n=2)
Colour Change Yellow → Dark brown
Reaction Principle Aliphatic Hydrocarbons + Cr6+ + H2SO4 → Cr3+
Coefficient of Variation 10% (for 20 to 1000 ppm)
Shelf Life 2 Years
Corrections for temperature & humidity Temperature correction is necessary
Store the tubes at cool and dark place.

 

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