Gastec 142L 醋酸丁酯气体检测管 CH3CO2C4H9(10~300 ppm)

Indicator: 10~300 ppm
Measuring Range: 10~300 ppm, Number of Pump Strokes 2
Sampling Time: 2 minute per pump stroke
Colour Change: Yellow → Dark brown → Pale blue after few minutes
Reaction Principle: CH3CO2(CH2)3CH3 + Cr6+ + H2SO4 → Cr3+
Coefficient of Variation: 15% (for 10 to 100 ppm), 10% (for 100 to 300 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range 10 to 300 ppm
Number of Pump Strokes 2
Correction Factor 1
Sampling Time 2 minutes per pump stroke
Detecting Limit 2 ppm (n=2)
Colour Change Yellow → Dark brown → Pale blue after few minutes
Reaction Principle CH3CO2(CH2)3CH3 + Cr6+ + H2SO4 → Cr3+
Coefficient of Variation 15% (for 10 to 100 ppm), 10% (for 100 to 300 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
Alcohols   + Dark brown (few minutes later) → Pale blue
Ketones   +
Esters   +
Aromatic HCs   +
Other substance measurable with this detector tube
Substance Correction Factor No. of pump strokes Measuring Range
Isobuty Acrylate Factor: 0.26 2 2.6 to 78 ppm
Butyl Acrylate Factor: 0.7 2 7 to 210 ppm
Calibration gas generation Diffusion tube method
TLV-TWA TLV-STEL Explosive range
150 ppm 200 ppm 1.7 to 7.6%
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