呋喃C4H4O氣體檢測(cè)管122SA FURAN 0.01-2.0%

Tube 22SA

1. PERFORMANCE
1） Measuring range ：0.2-2.0％ 0.01-0.9％
Number of pump strokes 1/2（50ml） 1（100ml）
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 Ethylene oxide at 1 pump stroke
and Furan concentration is determined by using a conversion chart.
7） Colour change ：Orange→Black
2. RELATIVE STANDARD DEVIATION
RSD-low：15％　RSD-mid.：10％　RSD-high：5％
3. CHEMICAL REACTION
Chromium oxide is reduced.
O ＋Cr6＋＋H2SO4→Cr3＋
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
1.6
1.0
1.2
1.4
1.8
0.8
0.6
0.4
0.2
0.1
0.01
%
（White）
DEHUMIDIFIER
122SA C FURAN
Substance Interference ppm Coexistence
Aromatic hydrocarbons FIG.1 Similar stain is produced. Higher readings are given.
Esters FIG.2 〃〃
Ketones 〃
Alcohols FIG.3 〃〃
Halogenated hydrocarbons Whole reagent is changed to 0.5％ 〃
Pale brown.
0
1.0
0.5
Toluene〔％〕?
FIG.1 Influence of Toluene
22SA Tube reading （％）?
Furan（％）?
Furan indicating value 〔％〕
0.25 0.5
Interference
0
1.0
0.5
Ethyl acetate〔％〕?
FIG.2 Influence of Ethyl acetate
Furan indicating value 〔％〕
1 2 0
2
1
Menthanol〔％〕?
FIG.3 Influence of Menthanol