1. <i id="cnzke"></i>
    2. <td id="cnzke"><ins id="cnzke"></ins></td>
          1. <noscript id="cnzke"><dl id="cnzke"></dl></noscript>

              1. <noscript id="cnzke"><tbody id="cnzke"></tbody></noscript>

                  • <td id="cnzke"><tr id="cnzke"></tr></td>
                  • <source id="cnzke"><tr id="cnzke"></tr></source>

                    1. 韩国三级大全久久网站_色噜噜一区二区三区_高清欧美性猛交xxxx黑人猛_激情五月开心婷婷_来一水AV@lysav

                      產(chǎn)品列表PRODUCTS LIST

                      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>190U異戊二烯CH2=C(CH3)CH=CH2氣體檢測(cè)管190U ISOPRENE 1-16ppm

                      異戊二烯CH2=C(CH3)CH=CH2氣體檢測(cè)管190U ISOPRENE 1-16ppm

                      簡(jiǎn)要描述:

                      異戊二烯CH2=C(CH3)CH=CH2氣體檢測(cè)管190U ISOPRENE 1-16ppm,中文名稱:異戊二烯 ;2-甲基-1,3-丁二烯,分子式:C5H8;CH2=C(CH3)-CH=CH2,分子量:68.11,英文名稱:isoprene,本品為碳五(C5)餾分的重要組分,是合成橡膠的重要單體。是一種共軛二烯烴,分子式為C5H8。對(duì)於天然產(chǎn)物萜類化合物,它們就是以分子中含有的異戊二烯單元個(gè)數(shù)分類的。

                      更新時(shí)間:2024-12-25

                      發(fā)郵件給我們:554328895@qq.com

                      分享到: 1
                      在線留言
                      異戊二烯CH2=C(CH3)CH=CH2氣體檢測(cè)管190U ISOPRENE 1-16ppm

                      異戊二烯CH2=C(CH3)CH=CH2氣體檢測(cè)管190U ISOPRENE 1-16ppm

                      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
                      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)?
                      90U Tube reading(ppm)?
                      (300mR)?
                      5
                      20
                      50
                      100
                      200
                      300
                      400
                      500
                      10
                      50
                      100
                      150
                      200
                      250
                      TEMPERATURE CORRECTION TABLE
                      Conver. Corrected Concentration (ppm)
                      value 10℃ 15℃ 20℃ 25℃ 30℃ 35℃ 40℃
                      (ppm) (50°F) (59°F) (68°F) (77°F) (86°F) (95°F) (104°F)
                      250 - 380 250 170 130 90 70
                      200 440 300 200 140 100 80 60
                      150 330 210 150 110 80 60 50
                      100 200 130 100 80 60 40 30
                      50 80 60 50 40 30 20 16
                      30 50 40 30 23 18 12 8
                      10 16 14 10 8 6 4 3
                      190U C

                      韩国三级大全久久网站_色噜噜一区二区三区_高清欧美性猛交xxxx黑人猛_激情五月开心婷婷_来一水AV@lysav
                      1. <i id="cnzke"></i>
                      2. <td id="cnzke"><ins id="cnzke"></ins></td>
                            1. <noscript id="cnzke"><dl id="cnzke"></dl></noscript>

                                1. <noscript id="cnzke"><tbody id="cnzke"></tbody></noscript>

                                    • <td id="cnzke"><tr id="cnzke"></tr></td>
                                    • <source id="cnzke"><tr id="cnzke"></tr></source>

                                      1. 蒙自县| 西城区| 噶尔县| 西藏| 利川市| 仁寿县| 山阴县| 涿鹿县| 阿拉善左旗| 和平县| 乐至县| 峨山| 屏东县| 息烽县| 邢台市| 蒙山县| 罗定市| 香格里拉县| 泗洪县| 顺义区| 息烽县| 共和县| 辉南县| 威远县| 章丘市| 望江县| 汽车| 墨脱县| 前郭尔| 昭觉县| 唐海县| 墨竹工卡县| 阳春市| 吉林省| 张北县| 西乌珠穆沁旗| 延安市| 济阳县| 龙川县| 天峻县| 潍坊市|