产品详情
简单介绍：
糠醛CsH4O2气体检测管190U
糠醛CsH4O2气体检测管190U，糠醛CsH4O2气体检测管190U FURFURAL 2-60ppm，日本光明理化工业株式会社从1947年开始，在气体分析领域开拓了六十余年 , 形成了驰名于世的 ” 北川 ” 式气体检测管。气体快速分析法 ” 北川 ” 的历史就是日本检测管的历史 。
详情介绍：
糠醛CsH4O2气体检测管190U
糠醛CsH4O2气体检测管190U，糠醛CsH4O2气体检测管190U FURFURAL 2-60ppm，日本光明理化工业株式会社从1947年开始，在气体分析领域开拓了六十余年 , 形成了驰名于世的 ” 北川 ” 式气体检测管。气体快速分析法 ” 北川 ” 的历史就是日本检测管的历史 。目前是世界上*大的检测管生产厂家，也是日本**家通过美国SEI的认证，欧盟的认证的检测管厂家。公司不仅有ISO9001:2000的认证，还获得了环境管理的ISO14001的认证。北川式手动气体采集器AP-20 备有采气完成指示计 , 可以清楚的判明采气是否完成 . • 有专门截留玻璃的截留槽 , 以防止检测管割尖时玻璃片飞溅 . • 有采气容积为 50 毫升和 100 毫升的两段式制动卡 . • 采气器极为小巧 , 并有便于携带的皮具包 。
Tube No.190U
1. PERFORMANCE
1) Measuring range ：2-60 ppm
Number of pump strokes 3(300 ml)
2) Sampling time ：4.5 minutes / 3 pump strokes
3) Detectable limit ：0.5 ppm
4) Shelf life ：3 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 Furfural concentration is determined by using a conversion chart.
8) Colour change ：Yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low：15％ RSD-mid.：10％ RSD-high：10％
3. CHEMICAL REACTION
Chromium oxide is reduced.
CH＝CH
O ＋H2SO4＋Cr6＋→Cr3＋
CH＝C－CHO
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
500
400
300
200
150
100
50
20
5
ppm
(White)
DEHUMIDIFIER
190U C FURFURAL
Substance ppm Interference Coexistence
Alcohols Similar stains are produced and higher
readings are given.
Toluene 200 Whole reagent is changed to Pale orange. Unclear stains are produced.
TEMPERATURE CORRECTION TABLE
Conver. Corrected Concentration (ppm)
value 0℃ 10℃ 20℃ 30℃ 40℃
(ppm) (32°F) (50°F) (68°F) (86°F) (104°F)
60 － － 60 50 45
50 － 71 50 45 40
40 － 53 40 35 35
30 63 35 30 30 30
20 25 22 20 20 20
15 17 15 15 15 15
10 10 10 10 10 10
5 5 5 5 5 5
2 2 2 2 2 2
No.190U Tube reading (ppm)?
(300mR)?
Furfural(ppm)?
500
400
300
200
100
50
20
5
2
5
10
20
30
40
50
1. PERFORMANCE
1) Measuring range ：2-60 ppm
Number of pump strokes 3(300 ml)
2) Sampling time ：4.5 minutes / 3 pump strokes
3) Detectable limit ：0.5 ppm
4) Shelf life ：3 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 Furfural concentration is determined by using a conversion chart.
8) Colour change ：Yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low：15％ RSD-mid.：10％ RSD-high：10％
3. CHEMICAL REACTION
Chromium oxide is reduced.
CH＝CH
O ＋H2SO4＋Cr6＋→Cr3＋
CH＝C－CHO
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
500
400
300
200
150
100
50
20
5
ppm
(White)
DEHUMIDIFIER
190U C FURFURAL
Substance ppm Interference Coexistence
Alcohols Similar stains are produced and higher
readings are given.
Toluene 200 Whole reagent is changed to Pale orange. Unclear stains are produced.
TEMPERATURE CORRECTION TABLE
Conver. Corrected Concentration (ppm)
value 0℃ 10℃ 20℃ 30℃ 40℃
(ppm) (32°F) (50°F) (68°F) (86°F) (104°F)
60 － － 60 50 45
50 － 71 50 45 40
40 － 53 40 35 35
30 63 35 30 30 30
20 25 22 20 20 20
15 17 15 15 15 15
10 10 10 10 10 10
5 5 5 5 5 5
2 2 2 2 2 2
No.190U Tube reading (ppm)?
(300mR)?
Furfural(ppm)?
500
400
300
200
100
50
20
5
2
5
10
20
30
40
50