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简单介绍：
日本光明理化二丙酮醇气体检测管190U
日本光明理化二丙酮醇气体检测管190U，二丙酮醇气体检测管190U DIACETONE ALCOHOL 10-250ppm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：
日本光明理化二丙酮醇气体检测管190U
日本光明理化二丙酮醇气体检测管190U，二丙酮醇气体检测管190U DIACETONE ALCOHOL 10-250ppm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
92
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)
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
92
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)