产品详情
简单介绍：
异戊二烯CH2=C(CH3)CH=CH2气体检测管190U
异戊二烯CH2=C(CH3)CH=CH2气体检测管190U ，异戊二烯CH2=C(CH3)CH=CH2气体检测管190U ISOPRENE 1-16ppm
详情介绍：
异戊二烯CH2=C(CH3)CH=CH2气体检测管190U
异戊二烯CH2=C(CH3)CH=CH2气体检测管190U ，异戊二烯CH2=C(CH3)CH=CH2气体检测管190U ISOPRENE 1-16ppm，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 。
1. PERFORMANCE
1) Measuring range ：10-250 ppm
Number of pump strokes 3(300ml)
2) Sampling time ：4.5 minutes/3 pump strokes
3) Detectable limit ：1 ppm
4) Shelf life ：2 years
5) Operating temperature ：10～40℃
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 Diacetone alcohol concentration is determined by using a conversion chart.
8) Colour change ：Yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low：10％ RSD-mid.：5％ RSD-high：5％
3. CHEMICAL REACTION
Chromium oxide is reduced.
(CH3)2C(OH)CH2COCH3＋Cr6＋＋H2SO4→Cr3＋
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
200
150
500
400
300
100
50
20
5
300ml
ppm
(White)
DEHUMIDIFIER
Tube No.
DIACETONE ALCOHOL
Substance Interference Coexistence
Alcohols FIG.1 Similar stain is produced. Higher readings are given.
Halogenated hydrocarbons 〃
Aliphatic hydrocarbons Whole reagent is discoloured to It the top of Pale blue stain is clear,the
Pale brown. accuracy of readings is not affected.
Aromatic hydrocarbons 〃〃
Esters 〃〃
0
20
30
40
50
10
Ethanol〔ppm〕?
FIG.1 Influence of Ethanol
Diacetone indicating value 〔ppm〕
50 100
Coexistence
Interference
Diacetone alcohol(ppm)?
No.190U Tube reading(ppm)?
(300mR)?
5
20
50
100
200
300
400
500
10
50
100
150
200
250
TEMPERATURE CORRECTION TABLE
Conver. Corrected Concentration (ppm)
value 10℃ 15℃ 20℃ 25℃ 30℃ 35℃ 40℃
(ppm) (50°F) (59°F) (68°F) (77°F) (86°F) (95°F) (104°F)
250 － 380 250 170 130 90 70
200 440 300 200 140 100 80 60
150 330 210 150 110 80 60 50
100 200 130 100 80 60 40 30
50 80 60 50 40 30 20 16
30 50 40 30 23 18 12 8
10 16 14 10 8 6 4 3
190U C
1) Measuring range ：10-250 ppm
Number of pump strokes 3(300ml)
2) Sampling time ：4.5 minutes/3 pump strokes
3) Detectable limit ：1 ppm
4) Shelf life ：2 years
5) Operating temperature ：10～40℃
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 Diacetone alcohol concentration is determined by using a conversion chart.
8) Colour change ：Yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low：10％ RSD-mid.：5％ RSD-high：5％
3. CHEMICAL REACTION
Chromium oxide is reduced.
(CH3)2C(OH)CH2COCH3＋Cr6＋＋H2SO4→Cr3＋
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
200
150
500
400
300
100
50
20
5
300ml
ppm
(White)
DEHUMIDIFIER
Tube No.
DIACETONE ALCOHOL
Substance Interference Coexistence
Alcohols FIG.1 Similar stain is produced. Higher readings are given.
Halogenated hydrocarbons 〃
Aliphatic hydrocarbons Whole reagent is discoloured to It the top of Pale blue stain is clear,the
Pale brown. accuracy of readings is not affected.
Aromatic hydrocarbons 〃〃
Esters 〃〃
0
20
30
40
50
10
Ethanol〔ppm〕?
FIG.1 Influence of Ethanol
Diacetone indicating value 〔ppm〕
50 100
Coexistence
Interference
Diacetone alcohol(ppm)?
No.190U Tube reading(ppm)?
(300mR)?
5
20
50
100
200
300
400
500
10
50
100
150
200
250
TEMPERATURE CORRECTION TABLE
Conver. Corrected Concentration (ppm)
value 10℃ 15℃ 20℃ 25℃ 30℃ 35℃ 40℃
(ppm) (50°F) (59°F) (68°F) (77°F) (86°F) (95°F) (104°F)
250 － 380 250 170 130 90 70
200 440 300 200 140 100 80 60
150 330 210 150 110 80 60 50
100 200 130 100 80 60 40 30
50 80 60 50 40 30 20 16
30 50 40 30 23 18 12 8
10 16 14 10 8 6 4 3
190U C