乙烷纖維素溶劑醋酸鹽C2H5OC2H4OCOCH3 190U 5-150ppm 返回列表頁

乙烷纖維素溶劑醋酸鹽C2H5OC2H4OCOCH3 190U 5-150ppm

1. PERFORMANCE
1） Measuring range ：5-100 ppm
Number of pump strokes 3（300ml）
2） Sampling time ：4.5 minutes/3 pump strokes
3） Detectable limit ：2 ppm
4） Shelf life ：2 years
5） Operating temperature ：0～40℃
6） Temperature compensation：Necessary（See"TEMPERATURE CORRECTION TABLE"）
7） Reading ：Graduations printed on the tube are calibrated by Ethyl cellosolve at 3 pump strokes
and 1-Butanol concentration is determined by using a conversion chart.
8） Colour change ：Yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low：10％　RSD-mid.：10％　RSD-high：5％
3. CHEMICAL REACTION
Chromium oxide is reduced.
CH3CH2CH2CH2OH＋Cr6＋＋H2SO4→Cr3＋
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
50
20
100
150
200
300
400
500
5
300ml
ppm
GAS To pump
DEHUMIDIFIER
（White）
Tube No.
1-BUTANOL
Substance ppm Interference Coexistence
Alcohols FIG.1 Similar stain is produced. Higher readings are given.
Toluene 200 Whole reagent is changed to Pale blue. 〃
Hexane 1,000 The accuracy of readings is not affected. The accuracy of readings is not affected.
Trichloroethylene 1,000 〃〃
Ethyl acetate FIG.2 1,000 〃〃
0
100
50
Ethanol〔ppm〕?
FIG.1 Influence of Ethanol
1-Butanol indicating value 〔ppm〕
50 100
Coexistence
Interference
0
100
50
Ethyl acetate〔ppm〕?
FIG.2 Influence of Ethyl acetate
1-Butanol indicating value 〔ppm〕
500 1000
TEMPERATURE CORRECTION TABLE
Scale True Concentration （ppm）
Readings 0℃ 10℃ 20℃ 30℃ 40℃
（ppm） （32°F） （50°F） （68°F） （86°F） （104°F）
100 － － 100 85 77
80 － － 80 70 63
60 － 80 60 53 50
40 75 50 40 35 33
20 30 23 20 18 16
10 13 11 10 9 8
5 5 5 5 5 5
1-Butanol（ppm）?
90U Tube reading（ppm）