Gastec 144 便携式气体检测管醋酸异丁酯检测管CH3CO2CH2CH(CH3)2(10~300 ppm)

Indicator: 10 ~300 ppm
Measuring Range: 10 ~300 ppm, Number of Pump Strokes 2
Sampling Time: 2 minutes per pump stroke
Colour Change: Yellow → Blackish brown → Pale blue
Reaction Principle: CH3CO2CH2CH(CH3)2 + 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 → Blackish brown → Pale blue after few minutes
Reaction Principle CH3CO2CH2CH(CH3)2 + 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 P→Pale blue
(after few minutes)
Ketones   + Dark brown P→Pale blue
(after few minutes)
Esters   + Dark brown P→Pale blue
(after few minutes)
Calibration gas generation Diffusion tube method
TLV-TWA TLV-STEL Explosive range
150 ppm - 1.3 to 10.5%
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