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產(chǎn)品詳情
簡單介紹：
環(huán)氧乙烷CH2CH2O氣體檢知管122SC
環(huán)氧乙烷CH2CH2O氣體檢知管122SC，環(huán)氧乙烷CH2CH2O氣體檢知管122SC ETHYLENE OXIDE 1-15ppm，日本光明理化工業(yè)株式會(huì)社從1947年開始，在氣體分析領(lǐng)域開拓了六十余年 , 形成了馳名于世的 ” 北川 ” 式氣體檢測管。氣體快速分析法 ” 北川 ” 的歷史就是日本檢測管的歷史
詳情介紹：
環(huán)氧乙烷CH2CH2O氣體檢知管122SC
環(huán)氧乙烷CH2CH2O氣體檢知管122SC，環(huán)氧乙烷CH2CH2O氣體檢知管122SC ETHYLENE OXIDE 1-15ppm，日本光明理化工業(yè)株式會(huì)社從1947年開始，在氣體分析領(lǐng)域開拓了六十余年 , 形成了馳名于世的 ” 北川 ” 式氣體檢測管。氣體快速分析法 ” 北川 ” 的歷史就是日本檢測管的歷史 。目前是世界上*大的檢測管生產(chǎn)廠家，也是日本**家通過美國SEI的認(rèn)證，歐盟的認(rèn)證的檢測管廠家。公司不僅有ISO9001:2000的認(rèn)證，還獲得了環(huán)境管理的ISO14001的認(rèn)證。北川式手動(dòng)氣體采集器AP-20 備有采氣完成指示計(jì) , 可以清楚的判明采氣是否完成 . • 有專門截留玻璃的截留槽 , 以防止檢測管割尖時(shí)玻璃片飛濺 . • 有采氣容積為 50 毫升和 100 毫升的兩段式制動(dòng)卡 . • 采氣器極為小巧 , 并有便于攜帶的皮具包 。
Tube No.122SC
1. PERFORMANCE
1) Measuring range ：1-15 ppm
Number of pump strokes ：3(300ml)
2) Sampling time ：4.5 minutes/3 pump strokes
3) Detectable limit ：0.5 ppm
4) Shelf life ：3 years
5) Operating temperature ：10～40℃
6) Temperature compensation ：Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading ：Direct reading from the scale calibrated by 3 pump strokes
8) Colour change ：Pale pink→Yellow
2. RELATIVE STANDARD DEVIATION
RSD-low：10％ RSD-mid.： 5％ RSD-high：5％
3. CHEMICAL REACTION
By decomposing with an Oxidizer, Formic acid is produced and PH indicator is discoloured.
CH2CH2O＋H2SO4→HOCH2CH2OH
HOCH2CH2OH＋HIO4→2HCHO＋HIO3＋H2
HCHO＋HIO4＋H2SO4→HCOOH＋HIO3
HCOOH＋NaOH→Na(HCOO)＋O2
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
????
GAS ???? To pump
DETECTOR TUBE
(White)
PRETREAT TUBE
15
10
5
1
ppm
300
ml
122SC ETHYLENE OXIDE
Substance Interference Coexistence
Aldehydes FIG.2 Similar stain is produced. Higher readings are given.
Sulphur dioxide Pale yellow stain is produced. 〃
Hydrogen sulphide FIG.1 〃〃
0
20
10
Hydrogen sulphide〔ppm〕?
FIG.1 Influence of Hydrogen sulphide
Ethylene oxide indicating value 〔ppm〕
1 2
Coexistence
Interference
0
20
10
Formaldehyde〔ppm〕?
FIG.2 Influence of Formaldehyde
Ethylene oxide indicating value 〔ppm〕
10 20
Coexistence
Interference
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 10℃ 15-25℃ 30℃ 40℃
(ppm) (50°F) (59°F) (86°F) (77°F)
15 19 15 13 10
10 12.5 10 8.5 7
5 6 5 4 3.5
1. PERFORMANCE
1) Measuring range ：1-15 ppm
Number of pump strokes ：3(300ml)
2) Sampling time ：4.5 minutes/3 pump strokes
3) Detectable limit ：0.5 ppm
4) Shelf life ：3 years
5) Operating temperature ：10～40℃
6) Temperature compensation ：Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading ：Direct reading from the scale calibrated by 3 pump strokes
8) Colour change ：Pale pink→Yellow
2. RELATIVE STANDARD DEVIATION
RSD-low：10％ RSD-mid.： 5％ RSD-high：5％
3. CHEMICAL REACTION
By decomposing with an Oxidizer, Formic acid is produced and PH indicator is discoloured.
CH2CH2O＋H2SO4→HOCH2CH2OH
HOCH2CH2OH＋HIO4→2HCHO＋HIO3＋H2
HCHO＋HIO4＋H2SO4→HCOOH＋HIO3
HCOOH＋NaOH→Na(HCOO)＋O2
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
????
GAS ???? To pump
DETECTOR TUBE
(White)
PRETREAT TUBE
15
10
5
1
ppm
300
ml
122SC ETHYLENE OXIDE
Substance Interference Coexistence
Aldehydes FIG.2 Similar stain is produced. Higher readings are given.
Sulphur dioxide Pale yellow stain is produced. 〃
Hydrogen sulphide FIG.1 〃〃
0
20
10
Hydrogen sulphide〔ppm〕?
FIG.1 Influence of Hydrogen sulphide
Ethylene oxide indicating value 〔ppm〕
1 2
Coexistence
Interference
0
20
10
Formaldehyde〔ppm〕?
FIG.2 Influence of Formaldehyde
Ethylene oxide indicating value 〔ppm〕
10 20
Coexistence
Interference
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 10℃ 15-25℃ 30℃ 40℃
(ppm) (50°F) (59°F) (86°F) (77°F)
15 19 15 13 10
10 12.5 10 8.5 7
5 6 5 4 3.5