Gastec 22 乙硼烷气体检测管B2H6(0.02~5ppm)

Indicator: 0.1~2.0ppm
Measuring Range: 
+ 0.02 to 0.05 ppm, Number of Pump Strokes 5
+ 0.05 to 2 ppm, Number of Pump Strokes 2
+ , Number of Pump Strokes 1
Sampling Time: 1 minute per pump stroke
Colour Change: Yellow → Red
Reaction Principle: B2H6 + 6HgCl2 → 2B2(HgCl)3 + 6HCl, HCl + Base → chloride
Coefficient of Variation: 10% (for 0.05 to 0.4 ppm), 5% (for 0.4 to 2 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range
0.02 to 0.05 ppm 0.05 to 2 ppm 2 to 5 ppm
Number of Pump Strokes
5 2 1
Correction Factor
1/3 1 2.5
Sampling Time 1 minute per pump stroke
Detecting Limit 0.01 ppm (n=5)
Colour Change Yellow → Red
Reaction Principle Diborane reacts with mercuric chloride to produce hydrogen chloride.
HCl react with indicator to discolour to red.
B2H6 + 6HgCl2 → 2B2(HgCl)3 + 6HCl
HCl + Base → chloride
Coefficient of Variation 10% (for 0.05 to 0.4 ppm), 5% (for 0.4 to 2 ppm)
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 Concentration Interference Change colour by itself to
Arsine 1/10 time + Red
Hydrogen selenide 1/10 time + Red
Phosphine 1/10 time + Red
Hydrogen chloride 1/3 time + Red
Calibration gas generation High pressure gas cylinder method
TLV-TWA TLV-STEL Explosive range
0.1 ppm (2014) -  

 

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