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简单介绍：
二异丁基酮气体检测管139U
二异丁基酮气体检测管139U,二异丁基酮气体检测管139U Diisobutyl ketone 20-1000ppm,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：
二异丁基酮气体检测管139U
二异丁基酮气体检测管139U,二异丁基酮气体检测管139U Diisobutyl ketone 20-1000ppm,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.139U
1. PERFORMANCE
1) Measuring range ：20-1,500 ppm
Number of pump strokes 1(100ml)
2) Sampling time ：1.5 minutes/1 pump stroke
3) Detectable limit ：10 ppm
4) Shelf life ：2 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 ：Yellow→Pale blue(The top of discoloured layer is Brown.)
2. RELATIVE STANDARD DEVIATION
RSD-low：10％ RSD-mid.：10％ RSD-high：10％
3. CHEMICAL REACTION
Chromium oxide is reduced.
CH3COC2H5＋Cr6＋＋H2SO4→Cr3＋
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
20
50
100
200
500
1000
1500
ppm
GAS To pump
DEHUMIDIFIER
(White)
139U METHYL ETHYL KETONE
Substance Interference Coexistence
Alcohols Similar or Brown stain is produced. Higher readings are given.
Esters 〃〃
Ketones 〃〃
Aromatic hydrocarbons 〃〃
Whole reagent is changed to Brown,
Halogenated hydrocarbons but if the top of Pale blue stain is clear,
FIG.2 the reading can be obtained.
Paraffin hydrocarbons FIG.1 〃
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 10℃ 15℃ 20℃ 25℃ 30℃ 35℃ 40℃
(ppm) (50°F) (59°F) (68°F) (77°F) (86°F) (95°F) (104°F)
1,500 2,050 1,750 1,500 1,280 1,100 940 820
1,000 1,430 1,200 1,000 850 720 620 530
500 750 620 500 430 360 320 280
200 300 250 200 170 140 120 110
100 160 120 100 90 70 60 50
50 80 60 50 40 30 30 20
20 30 30 20 20 10 10 10
0
1200
1400
800
400
600
1000
Hexane〔ppm〕?
FIG.1 Influence of Hexane
Methyl ethyl ketone
indicating value 〔ppm〕
100 200 300 400 500
200
0
1200
1400
800
400
600
1000
Trichloroethylene〔ppm〕?
FIG.2 Influence of Trichloroethylene
Methyl ethyl ketone
indicating value 〔ppm〕
200 400 600
200
1. PERFORMANCE
1) Measuring range ：20-1,500 ppm
Number of pump strokes 1(100ml)
2) Sampling time ：1.5 minutes/1 pump stroke
3) Detectable limit ：10 ppm
4) Shelf life ：2 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 ：Yellow→Pale blue(The top of discoloured layer is Brown.)
2. RELATIVE STANDARD DEVIATION
RSD-low：10％ RSD-mid.：10％ RSD-high：10％
3. CHEMICAL REACTION
Chromium oxide is reduced.
CH3COC2H5＋Cr6＋＋H2SO4→Cr3＋
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
20
50
100
200
500
1000
1500
ppm
GAS To pump
DEHUMIDIFIER
(White)
139U METHYL ETHYL KETONE
Substance Interference Coexistence
Alcohols Similar or Brown stain is produced. Higher readings are given.
Esters 〃〃
Ketones 〃〃
Aromatic hydrocarbons 〃〃
Whole reagent is changed to Brown,
Halogenated hydrocarbons but if the top of Pale blue stain is clear,
FIG.2 the reading can be obtained.
Paraffin hydrocarbons FIG.1 〃
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 10℃ 15℃ 20℃ 25℃ 30℃ 35℃ 40℃
(ppm) (50°F) (59°F) (68°F) (77°F) (86°F) (95°F) (104°F)
1,500 2,050 1,750 1,500 1,280 1,100 940 820
1,000 1,430 1,200 1,000 850 720 620 530
500 750 620 500 430 360 320 280
200 300 250 200 170 140 120 110
100 160 120 100 90 70 60 50
50 80 60 50 40 30 30 20
20 30 30 20 20 10 10 10
0
1200
1400
800
400
600
1000
Hexane〔ppm〕?
FIG.1 Influence of Hexane
Methyl ethyl ketone
indicating value 〔ppm〕
100 200 300 400 500
200
0
1200
1400
800
400
600
1000
Trichloroethylene〔ppm〕?
FIG.2 Influence of Trichloroethylene
Methyl ethyl ketone
indicating value 〔ppm〕
200 400 600
200