產(chǎn)品詳情
簡單介紹：
1,2,4-**基苯C6H3(CH3)3氣體檢測管111U
1,2,4-**基苯C6H3(CH3)3氣體檢測管111U 1,2,4-TRIMETHYL BENZENE 20-250ppm，日本光明理化工業(yè)株式會社從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
詳情介紹：
1,2,4-**基苯C6H3(CH3)3氣體檢測管111U
1,2,4-**基苯C6H3(CH3)3氣體檢測管111U 1,2,4-TRIMETHYL BENZENE 20-250ppm，日本光明理化工業(yè)株式會社從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。北川式檢測管的特長 : 無論何時:由于不用分析儀器和化學(xué)藥劑 , 省略了測量前的準備工作 . 無論何時都可以進行測定無論何地極為小巧便于攜帶 ,只要有微量的空氣就可以進行測定 , *適合于現(xiàn)場測定 .無論何人測定的操作非常簡單 , 無論專業(yè)人士或非專業(yè)人士。 多種氣體:可以檢測多達 300 余種氣體 ，400多種型號 快速: 測定的結(jié)果幾分鐘就可得到 , 可以立即轉(zhuǎn)入下一步操作 . **: 不用電源 , 熱源 , 即使有易燃易爆的氣體存在 , 也可以確保操作** 。
Tube No.111U
1. PERFORMANCE
1) Measuring range ：10-250 ppm
Number of pump strokes 1(100ml)
2) Sampling time ：1.5 minutes/1 pump stroke
3) Detectable limit ：1 ppm
4) Shelf life ：2 years
5) Operating temperature ：0～40℃
6) Reading ：Graduations printed on the tube are calibrated by Ethyl acetate at 1 pump stroke
and 1,2,4-trimethyl benzene is determined by using a conversion chart.
7) Colour change ：Yellow→Dark brown
2. RELATIVE STANDARD DEVIATION
RSD-low：10％ RSD-mid.：5％ RSD-high：5％
3. CHEMICAL REACTION
Chromium oxide is reduced.
C6H3(CH3)3＋Cr6＋＋H2SO4→Cr3＋
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
DEHUMIDIFIER
(White)
250
200
150
100
50
30
10
ppm
111U C 1,2,4-TRIMETHYL BENZENE
Substance Interference Coexistence
Alcohols Brown stain is produced. Higher readings are given.
Esters 〃〃
Ketones 〃〃
Aromatic hydrocarbons 〃〃
Aliphatic hydrocarbons Double-layer stain is produced. If the
(more than C3) dcaanrk b ber oowbnta sintaeidn bisy citl.ear, the readings
Halogenated hydrocarbons 〃
No. 111U Tube reading(ppm)?
(100ml)?
Trimethyl benzene(ppm)?
1000
800
600
400
200
100
50
20
20
150
200
50
100
25
1. PERFORMANCE
1) Measuring range ：10-250 ppm
Number of pump strokes 1(100ml)
2) Sampling time ：1.5 minutes/1 pump stroke
3) Detectable limit ：1 ppm
4) Shelf life ：2 years
5) Operating temperature ：0～40℃
6) Reading ：Graduations printed on the tube are calibrated by Ethyl acetate at 1 pump stroke
and 1,2,4-trimethyl benzene is determined by using a conversion chart.
7) Colour change ：Yellow→Dark brown
2. RELATIVE STANDARD DEVIATION
RSD-low：10％ RSD-mid.：5％ RSD-high：5％
3. CHEMICAL REACTION
Chromium oxide is reduced.
C6H3(CH3)3＋Cr6＋＋H2SO4→Cr3＋
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
DEHUMIDIFIER
(White)
250
200
150
100
50
30
10
ppm
111U C 1,2,4-TRIMETHYL BENZENE
Substance Interference Coexistence
Alcohols Brown stain is produced. Higher readings are given.
Esters 〃〃
Ketones 〃〃
Aromatic hydrocarbons 〃〃
Aliphatic hydrocarbons Double-layer stain is produced. If the
(more than C3) dcaanrk b ber oowbnta sintaeidn bisy citl.ear, the readings
Halogenated hydrocarbons 〃
No. 111U Tube reading(ppm)?
(100ml)?
Trimethyl benzene(ppm)?
1000
800
600
400
200
100
50
20
20
150
200
50
100
25