日本KITAGAWA北川式甲乙酮气体检测管139SB METHYL ETHYL KETONE 0.01-1.4%
Tube 39SB
1. PERFORMANCE
1) Measuring range ：0.01-1.4％
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 ：Direct reading from the scale calibrated by 2 pump strokes
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.
CH3COC2H5＋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
%
200ml
GAS To pump
139SB METHYL ETHYL KETONE
Substance Interference ppm Coexistence
Whole reagent is discoloured to
Acetylene 3％ Brown and higher readings are
given.
Propane 0.2％ 〃
Other organic gases or vapours .
except Halogenated hydrocar- Similar stain is produced 50 Higher readings are given.
bons
