醋酸異丁酯CH3CO2CH2CH（CH3）2氣體檢測(cè)管139SB ISOBUTYL ACETATE 0.01-1.4%

Tube 39SB
1. PERFORMANCE
1） Measuring range ：0.01-1.4％
Number of pump strokes 2（200ml）
2） Sampling time ：1.5 minutes/1 pump stroke
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 Propyl acetate concentration is determined by using a conversion chart.
7） Colour change ：Orange→Brownish green
2. RELATIVE STANDARD DEVIATION
RSD-low：10％　RSD-mid.：5％　RSD-high：5％
3. CHEMICAL REACTION
Potassium dichromate is reduced.
CH3CO2（CH2）2CH3＋Cr6＋＋H2SO4→Cr3＋
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
1.4
1.2
1.0
0.8
0.6
0.2
0.1
0.05
0.01
%
GAS To pump
139SB C PROPYL ACETATE
Substance Interference ppm Coexistence
Acetylene 3％ Whole reagent is changed to Brown.
Propane 0.2％ 〃
Other organic gases or vapours
except Halogenated hydrocar- Similar stain is produced. Higher readings are given.
bons
Propyl acetate（％）?
39SB Tube reading（％）?
（200ml）?
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
0.5
1.0
1.4