Gastec 19LA 快速砷化氢测量探测管AsH3(0.04-10ppm)

Indicator: 0.2~1.5ppm
Measuring Range: 
+ 0.04 to 0.1 ppm, Number of Pump Strokes 10
+ 0.1 to 1.5 ppm, Number of Pump Strokes 5
+ 1.5 to 2.4 ppm, Number of Pump Strokes 3
+ 2.4 to 10 ppm, Number of Pump Strokes 1
Sampling Time: 1.5 minute per pump stroke
Colour Change: Yellow → Red
Reaction Principle: AsH3 + 3HgCl2 → As(HgCl)3 + 3HCl, HCl + Basic compound → chloride compounds 
Coefficient of Variation: 10% (for 0.1 to 0.5 ppm), 5% (for 0.5 to 1.5 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Manual tube

Performance
Measuring Range
0.04 to 0.1 ppm 0.1 to 1.5 ppm 1.5 to 2.4 ppm 2.4 to 10 ppm
Number of Pump Strokes
10 5 3 1
Correction Factor
0.4 1 1.6 6.7
Sampling Time 1.5 minutes per pump stroke
Detecting Limit 0.02 ppm (n=10)
Colour Change Yellow → Red
Reaction Principle Arsine react with mercuric chloride to produce hydrogen chloride.
The indicator of the tube turns to red.
AsH3 + 3HgCl2 → As(HgCl)3 + 3HCl
HCl + Basic compound → chloride compounds
Coefficient of Variation 10% (for 0.1 to 0.5 ppm), 5% (for 0.5 to 1.5 ppm)
Shelf Life 2 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
Hydrogen chloride   No No
Diborane   No No
Phosphine 1/10 time + Red
Calibration gas generation High pressure gas cylinder method
TLV-TWA TLV-STEL Explosive range
0.005 ppm (2014) - -

 

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