乙醛（醋醛）检测管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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