Gastec 106 石脑油气体检测管(0.5~28 mg / L)

Indicator: 1 to 14 mg/L
Measuring Range: 
+ 0.5 to 1 mg/L, Number of Pump Strokes 2
+ 1 to 14 mg/L, Number of Pump Strokes 1
+ 14 to 28 mg/L, Number of Pump Strokes 1/2
Sampling Time: 45 seconds per pump stroke
Colour Change: Orange → Dark Green
Reaction Principle: Petroleum naphtha + Cr6+ + H2SO4 → Cr3+
Coefficient of Variation: 10% (for 1 to 4 mg/L), 5% (for 4 to 14 mg/L)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range
0.5 to 1 mg/L 1 to 14 mg/L 14 to 28 mg/L
Number of Pump Strokes
2 1 1/2
Correction Factor
1/2 1 2
Sampling Time 45 seconds per pump stroke
Detecting Limit 0.1 mg/L (n=2)
Colour Change Orange → Dark Green
Reaction Principle Petroleum naphtha + Cr6+ + H2SO4 → Cr3+
Coefficient of Variation 10% (for 1 to 4 mg/L), 5% (for 4 to 14 mg/L)
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
sulphur dioxide 500 ppm + Green
Hydrogen sulphide 500 ppm + Dark brown
(500 ppm)
Acetylene 3% + Dark brown
(whole layer)
Propane 0.2% + Dark brown
(whole layer)
Organic solvents   + Dark green
Other substance measurable with this detector tube
Substance Correction Factor No. of pump strokes Measuring Range
Petroleum benzine 1.0 1/2, 1 or 2 0.5 to 28 mg/L
Petroleum ether 1.0 1/2, 1 or 2 0.5 to 28 mg/L
Calibration gas generation Static gas dilution method

 

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