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主页 有毒有害气体快速检测管（用泵） Gastec 124L 快速苯乙烯测量探测管C6H5CH：CH2（2-100ppm）

Gastec 124L 快速苯乙烯测量探测管C6H5CH：CH2（2-100ppm）

Indicator: 2 to 25 ppm
Measuring Range: 
+ 2 to 25 ppm, Number of Pump Strokes 4
+ 25 to 100 ppm, Number of Pump Strokes 1
Sampling Time: 30 seconds per pump stroke
Colour Change: White → Yellow
Reaction Principle: C6H5CH:CH2+ H2S2O7 → Condensation Polymer
Coefficient of Variation: 10% (for 2 to 5 ppm), 5% (for 5 to 25 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Details

Catalog

Manual

Manual tube

Performance
Measuring Range
2 to 25 ppm 25 to 100 ppm
Number of Pump Strokes
4 1
Correction Factor
1 4
Sampling Time 30 seconds per pump stroke
Detecting Limit 0.5 ppm (n=4)
Colour Change White → Yellow
Reaction Principle C6H5CH:CH2+ H2S2O7 → Condensation Polymer
Coefficient of Variation 10% (for 2 to 5 ppm), 5% (for 5 to 25 ppm)
Shelf Life 3 Years
Corrections for temperature & humidity Unnecessary
Store the tubes at cool and dark place.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Alcohols, Esters 10 times + (Bleaching) No
Aldehydes, Ketones 10 times + (Bleaching) No
Butadiene 5 ppm + (Bleaching) Dark brown
Other substance measurable with this detector tube
Substance Correction Factor No. of pump strokes Measuring Range
Divinyl benzene 0.6 3 1 to 15 ppm
Calibration gas generation Diffusion tube method
TLV-TWA TLV-STEL Explosive range
20 ppm(2014) 40 ppm(2014) 1.1 to 6.1%

 

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