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        1. 上海境宣實(shí)業(yè)有限公司
          中級(jí)會(huì)員 | 第16年

          17601355022

          當(dāng)前位置:上海境宣實(shí)業(yè)有限公司>>日本光明北川式氣體檢測管>>氣體快速檢測管>> 157SB甲基溴C2H5Br氣體檢測管157SB METHYL BROMIDE 5-400ppm

          甲基溴C2H5Br氣體檢測管157SB METHYL BROMIDE 5-400ppm

          參  考  價(jià)面議
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          產(chǎn)品型號(hào)157SB

          品       牌

          廠商性質(zhì)代理商

          所  在  地上海市

          更新時(shí)間:2024-11-27 18:25:37瀏覽次數(shù):1121次

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          甲基溴 溴乙烷C2H5Br 乙基溴、溴代乙烷,Ethyl bromide 5-400ppm,甲基溴C2H5Br氣體檢測管157SB Ethyl bromide 5-400ppm,METHYL BROMIDE,第三種是當(dāng)前物質(zhì)易生與指示層產(chǎn)化學(xué)反應(yīng)時(shí),在制造中將這兩部分分別裝在兩個(gè)玻璃管內(nèi),分別熔封,使用時(shí)用套管相聯(lián)。氣體檢測管法的應(yīng)用特點(diǎn):

          甲基溴C2H5Br氣體檢測管157SB METHYL BROMIDE 5-400ppm

          1. PERFORMANCE
          1) Measuring range :5-80 ppm 2.5-40 ppm 0.9-7.3 ppm
          Number of pump strokes 1(100ml) 2(200ml) 4(400ml)
          2) Sampling time :1.5 minutes/1 pump stroke
          3) Detectable limit :1 ppm(200ml)
          4) Shelf life :3 years(Necessary to store in a refrigerated place ; 0~10℃)
          5) Operating temperature :0~40℃
          6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
          7) Reading :Direct reading from the scale calibrated by 1 pump stroke
          8) Colour change :White→Yellow
          2. RELATIVE STANDARD DEVIATION
          RSD-low:15% RSD-mid.:10% RSD-high:10%
          3. CHEMICAL REACTION
          By decomposing with an Oxidizer, Bromine is produced. Bromine reacts with o-Toluidine and yellow
          Orthoquinone is produced.
          CH3Br+I(xiàn)2O5+CrO3+H2SO4→Br2
          4. CALIBRATION OF THE TUBE
          GAS CHROMATOGRAPHY
          5. INTERFERENCE AND CROSS SENSITIVITY
          5
          10
          15
          20
          30
          40
          60
          80
          ppm
          100ml
          GAS To pump
          (Olive) (White)
          PRETREAT TUBE DETECTOR TUBE
          Tube No.
          157SB METHYL BROMIDE
          (NOTE)
          When the concentration is below 5 ppm, 2 pump strokes can be used to determine the lower concentration.
          Following formula is available for the actual concentration.
          Actual concentration=1/2×Temperature corrected value
          Substance Interference ppm Coexistence
          Halogen Similar stain is produced. Higher readings are given.
          Halogenated hydrocarbons 〃〃
          Hexane FIG.1 200 Lower readings are given.
          0
          50
          60
          70
          80
          30
          40
          Hexane〔ppm〕?
          FIG.1 Influence of Hexane Methyl bromide indicating value 〔
          ppm〕
          100 200 300 400 500 600 700
          20
          10
          TEMPERATURE CORRECTION TABLE
          Scale True Concentration (ppm)
          Readings 0℃ 5℃ 10℃ 20℃ 30℃ 40℃
          (ppm) (32°F) (41°F) (50°F) (68°F) (86°F) (104°F)
          80 - 140 98 80 75 73
          60 145 76 67 60 57 56
          40 44 43 42 40 40 40
          30 30 30 30 30 30 30
          3Br2H2N NH2 BrH2N=? =? =?NH2Br
          CH3 CH3

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