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                    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

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                      首頁>產(chǎn)品中心>日本光明北川式氣體檢測管>氣體快速檢測管>197U1-甲氧基-2丙醇1-Methoxy-2-propanol氣體檢測管10-500ppm

                      1-甲氧基-2丙醇1-Methoxy-2-propanol氣體檢測管10-500ppm

                      簡要描述:

                      環(huán)己酮?dú)怏w檢測管 丙二醇甲醚 1-甲氧基-2丙醇1-Methoxy-2-propanol氣體檢測管10-500ppm 丙二醇醚與乙二醇醚同屬二元醇醚類溶劑,丙二醇醚對人體的毒害性能低于乙二醇醚類產(chǎn)品,可視為無毒或低微毒性產(chǎn)品,由于其分子結(jié)構(gòu)中既有醚官能基又有羥基,因而它的溶解性能十分優(yōu)異,又有合適的揮發(fā)性以及反應(yīng)活性等特點(diǎn)而獲得廣泛的應(yīng)用,除用于多種高檔涂料的溶劑之外,還可用于化學(xué)中間體、剎車液、清洗劑、防冰劑等諸多領(lǐng)域。

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

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                      1-甲氧基-2丙醇1-Methoxy-2-propanol氣體檢測管10-500ppm

                      1-甲氧基-2丙醇1-Methoxy-2-propanol氣體檢測管10-500ppm

                      1. PERFORMANCE
                      1) Measuring range :2-100 ppm
                      Number of pump strokes 3(300ml)
                      2) Sampling time :4.5 minutes/3 pump strokes
                      3) Detectable limit :1 ppm
                      4) Shelf life :3 years
                      5) Operating temperature :0~40℃
                      6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
                      7) Reading :Direct reading from the scale calibrated by 3 pump strokes
                      8) Colour change :Yellow→Pale blue
                      2. RELATIVE STANDARD DEVIATION
                      RSD-low:10% RSD-mid.:10% RSD-high:5%
                      3. CHEMICAL REACTION
                      Chromium oxide is reduced.
                      C6H10O+Cr6++H2SO4→Cr3+
                      4. CALIBRATION OF THE TUBE
                      GAS CHROMATOGRAPHY
                      5. INTERFERENCE AND CROSS SENSITIVITY
                      GAS To pump
                      100
                      80
                      60
                      40
                      20
                      10
                      2
                      300ml
                      ppm
                      (White)
                      DEHUMIDIFIER
                      ??????
                      Tube No.
                      197U CYCLOHEXANONE
                      Substance Interference Coexistence
                      Aliphatic hydrocarbons Whole stain is changed to brown. The accuracy of reading is not
                      affected.
                      Aromatic hydrocarbons 〃〃
                      Halogenated hydrocarbons 〃〃
                      Alcohols FIG.1 Similar stain is produced. Higher readings are given.
                      Esters Pale ringed stain is produced near The accuracy of reading is not
                      the bottom of the reagent. affected.
                      0
                      30
                      50
                      70
                      10
                      Ethanol〔ppm〕?
                      FIG.1 Influence of Ethanol
                      Cyclohexanone indicating value 〔ppm〕
                      50 100 150
                      Coexistence
                      Interference
                      TEMPERATURE CORRECTION TABLE
                      Scale True Concentration (ppm)
                      Readings 10℃ 20℃ 30℃ 40℃
                      (ppm) (50°F) (68°F) (86°F) (104°F)
                      100 - 100 75 60
                      80 120 80 62 50
                      60 84 60 46 37
                      40 52 40 30 25
                      20 26 20 16 13
                      10 14 10 8 7
                      2 3 2 2 1
                      www.r-biopharm.com.cn
                      www.r-biopharm.com.cn

                      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
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