環己烷C6H12氣體檢測管 115S CYCLOHEXANE 0.01-0.6%

1. PERFORMANCE
1） Measuring range ：0.01-0.6％
Number of pump strokes 1（100ml）
2） Sampling time ：1 minute/1 pump stroke
3） Detectable limit ：50 ppm
4） Shelf life ：3 years
5） Operating temperature ：10～40℃
6） Temperature compensation ：Necessary（See "TEMPERATURE CORRECTION TABLE"）
7） Reading ：Direct reading from the scale calibrated by 1 pump stroke
8） Colour change ：Orange→Dark green
2. RELATIVE STANDARD DEVIATION
RSD-low：10％　RSD-mid.：5％　RSD-high：5％
3. CHEMICAL REACTION
Chromium oxide is reduced.
C6H12＋Cr6＋＋H2SO4→Cr3＋
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
0.6
0.5
0.4
0.3
0.2
0.1
0.05
0.01
%
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????
Tube No.
115S CYCLOHEXANE
89
Substance Interference ppm Coexistence
Benzene FIG.1 Black stain is produced. 400 Higher readings are given.
Toluene FIG.2 〃800 〃
Xylene 〃2,000 〃
Acetylene WDahrokl eg rleaeyenr. is discoloured to 〃
Ethylene Similar stain is produced. 〃
Paraffin hydrocarbons 〃〃
＊In presence of Alcohols, Ketones or Esters less than 6％, the accaracy of readings is not affected.
0
0.1
0.2
0.3
0.4
Benzene〔ppm〕?
FIG.1 Influence of Benzene
Cyclohexane indicating value 〔％〕
200 400 600 0
0.1
0.2
0.3
0.4
Toluene〔ppm〕?
FIG.2 Influence of Toluene