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                      首頁>產(chǎn)品中心>日本光明北川式氣體檢測(cè)管>氣體快速檢測(cè)管>111U1,2,4-*基苯C6H3(CH3)3氣體檢測(cè)管111U 20-250ppm

                      1,2,4-*基苯C6H3(CH3)3氣體檢測(cè)管111U 20-250ppm

                      簡(jiǎn)要描述:

                      1,2,4-*基苯C6H3(CH3)3氣體檢測(cè)管111U 1,2,4-TRIMETHYL BENZENE 20-250ppm,中文名稱2: 假枯烯,英文名稱2: pseudocumene,健康危害: 本品對(duì)眼、呼吸道有刺激作用;對(duì)中樞神經(jīng)系統(tǒng)有抑制作用。

                      更新時(shí)間:2024-12-26

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                      1,2,4-*基苯C6H3(CH3)3氣體檢測(cè)管111U 20-250ppm

                      1,2,4-*基苯C6H3(CH3)3氣體檢測(cè)管111U 1,2,4-TRIMETHYL BENZENE 20-250ppm

                      Tube 11U
                      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

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