乙醛（醋醛）檢測管139SB BUTYL ACETATE CH3CO2C4H9 10-400ppm

1. PERFORMANCE
1） Measuring range ：0.01-1.0％
Number of pump strokes 2（200ml）
2） Sampling time 3 minutes/2 pump strokes
3） Detectable limit ：10 ppm
4） Shelf life ：3 years
5） Operating temperature ：0～40℃
6） Reading ：Graduations printed on the tube are calibrated by Methyl ethyl ketone at 2 pump
strokes and Butyl acetate concentration is determined by using a conversion chart.
7） Colour change ：Orange→Brownish green
2. RELATIVE STANDARD DEVIATION
RSD-low：15％　RSD-mid.：10％　RSD-high：10％
3. CHEMICAL REACTION
Potassium dichromate is reduced.
CH3CO2（CH2）3CH3＋Cr6＋H2SO4→Cr3＋
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
0.01
0.05
0.1
0.2
0.4
0.6
0.8
1.0
1.2
1.4
％? GAS To pump
Tube No.
BUTYL ACETATE
Substance Interference ppm Coexistence
Acetylene 3％ Whole reagent is clanged to Brown.
Propane 0.2％ 〃
Other organic gases or vapours
except Halogenated hydrocar- Similar stain is produced. 50 Higher readings are given.
bons
139SB C
Butyl acetate（％）?
39SB Tube reading（％）?
（200mR）?
0.01
0.05
0.1
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0.01
0.1
0.2
0.4
0.6
0.8
1.0
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