Gastec 155 甲基环己酮气体检测管C7H12O(2~100ppm)

Indicator: 2 to 50 ppm
Measuring Range: 
+ 2 to 50 ppm, Number of Pump Strokes 3
+ 50 to 100 ppm, Number of Pump Strokes 2
Sampling Time: 3 minutes per pump stroke
Colour Change: Pale Yellow → Yellow
Reaction Principle: C7H12O + C6H3(NO2)2NHNH2 → (CH3)2C:NNHC6H3(NO2)2
Coefficient of Variation: 15% (for 2 to 10 ppm), 10% (for 10 to 50 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range
2 to 50 ppm 50 to 100 ppm
Number of Pump Strokes
3 2
Correction Factor
1 2
Sampling Time 3 minutes per pump stroke
Detecting Limit 0.2 ppm (n=3)
Colour Change Pale Yellow → Yellow
Reaction Principle C7H12O + C6H3(NO2)2NHNH2 → (CH3)2C:NNHC6H3(NO2)2
Coefficient of Variation 15% (for 2 to 10 ppm), 10% (for 10 to 50 ppm)
Shelf Life 2 Years
Corrections for temperature & humidity Temperature correction is necessary
Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Ketones   + Yellow
Calibration gas generation Diffusion tube method
TLV-TWA TLV-STEL Explosive range
50 ppm 75 ppm 1.15% or higher

 

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