Gastec 142 醋酸丁酯气体检测管CH3CO2C4H9(0.05~0.8%)

Indicator: 0.05 to 0.8%
Measuring Range: 0.05 to 0.8%, Number of Pump Strokes 2
Sampling Time: 45 seconds per pump stroke
Colour Change: Orange →Greenish brown
Reaction Principle: CH3CO2(CH2)3CH3 + Cr6+ H2SO4 → Cr3+
Coefficient of Variation: 15% (for 0.01 to 0.2 %), 10% (for 0.2 to 0.8 %)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range 0.05 to 0.8%
Number of Pump Strokes 2
Correction Factor 1
Sampling Time 45 seconds per pump stroke
Detecting Limit 0.015% (n=2)
Colour Change Orange →Greenish brown
Reaction Principle CH3CO2(CH2)3CH3 + Cr6+ H2SO4 → Cr3+
Coefficient of Variation 15% (for 0.01 to 0.2 %), 10% (for 0.2 to 0.8 %)
Shelf Life 3 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
sulphur dioxide 100 ppm Two layers
(Greenish brown & Pale brown)
Brown(50 ppm)
Hydrogen sulphide 100 ppm Two layers
(Greenish brown & Pale brown)
Greenish brown(25 ppm)
Alcohols, Esters, Ketones   + Greenish brown
Propane 0.2% Cannot use Pale brown for whole layer
(0.2%)
Toluene 25 ppm Two layers
(Greenish brown & Pale brown)
Pale brown(15 ppm)
Calibration gas generation Static gas dilution method
TLV-TWA TLV-STEL Explosive range
150 ppm(2015) 200 ppm(2015) 1.7 to 7.6%
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