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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>119U甲醇CH3OH氣體檢測(cè)管119U METHYLALCOHOL(METHANOL)20-1000ppm

                      甲醇CH3OH氣體檢測(cè)管119U METHYLALCOHOL(METHANOL)20-1000ppm

                      簡要描述:

                      甲醇CH3OH氣體檢測(cè)管119U METHYL ALCOHOL(METHANOL) 20-1000ppm,甲醇是一種無色、透明、易燃、易揮發(fā)的有毒液體,常溫下對(duì)金屬無腐蝕性(鉛、鋁除外),略有酒精氣味。分子量32.04,相對(duì)密度0.792(20/4℃),熔點(diǎn)-97.8℃,沸點(diǎn)64.5℃,閃點(diǎn)12.22℃,自燃點(diǎn)463.89℃,蒸氣密度 1.11,蒸氣壓 13.33KPa(100mmHg 21.2℃),蒸氣與空氣混合物爆炸極限 6~36.5 %(體積比) ,能與水、乙醇、苯、酮、鹵代烴

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

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                      甲醇CH3OH氣體檢測(cè)管119U METHYLALCOHOL(METHANOL)20-1000ppm

                      甲醇CH3OH氣體檢測(cè)管119U METHYL ALCOHOL(METHANOL) 20-1000ppm

                      Tube 19U

                      1. PERFORMANCE
                      1) Measuring range :20-1,000 ppm
                      Number of pump strokes 1(100ml)
                      2) Sampling time :1.5 minutes/1 pump stroke
                      3) Detectable limit :5 ppm
                      4) Shelf life :2 years
                      5) Operating temperature :0~40℃
                      6) Temperature compensation :Necessary(0~20℃)(See "TEMPERATURE CORRECTION TABLE")
                      7) Reading :Direct reading from the scale calibrated by 1 pump stroke
                      8) Colour change :Yellow→Pale blue
                      2. RELATIVE STANDARD DEVIATION
                      RSD-low:15% RSD-mid.:10% RSD-high:10%
                      3. CHEMICAL REACTION
                      Potassium dichromate is reduced
                      CH3OH+Cr6++H2SO4→Cr3+
                      4. CALIBRATION OF THE TUBE
                      GAS CHROMATOGRAPHY
                      5. INTERFERENCE AND CROSS SENSITIVITY
                      20
                      50
                      100
                      200
                      400
                      600
                      800
                      1000
                      ppm
                      GAS To pump
                      DEHUMIDIFIER
                      (White)
                      119U
                      METHYL ALCOHOL
                      (METHANOL)
                      Substance Interference Coexistence
                      Alcohols FIG.1 Similar stain is produced. Higher readings are given.
                      Esters FIG.2 〃
                      Paraffin (morefi nth haynd Cro3c)arbons Whole reagent is changed to Brown. 〃
                      Aromatic hydrocarbons 〃〃
                      Ketones 〃〃
                      Halogenated hydrocarbons 〃〃
                      0
                      500
                      1000
                      Ethanol〔ppm〕?
                      FIG.1 Influence of Ethanol
                      Methanol indicating value 〔ppm〕
                      500
                      Coexistence
                      Interference
                      0
                      500
                      1000
                      Ethyl acetate〔ppm〕?
                      FIG.2 Influence of Ethyl acetate
                      Methanol indicating value 〔ppm〕
                      500
                      TEMPERATURE CORRECTION TABLE
                      Scale True Concentration (ppm)
                      Readings 0℃ 10℃ 20-40℃
                      (ppm) (32°F) (50°F) (68-104°F)
                      1000 1200 1100 1000
                      800 960 880 800
                      600 600 660 600
                      400 480 440 400
                      200 240 220 200
                      100 120 110 100
                      50 60 50 50
                      20 24 20 20

                       
                      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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