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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>157SB甲基溴氣體檢測管157SB METHYL BROMIDE 20-250ppm

                      甲基溴氣體檢測管157SB METHYL BROMIDE 20-250ppm

                      簡要描述:

                      157SB METHYL BROMIDE (-) 157SB甲基溴,CH3CHCLCH2Cl又稱氯化丙烯,1,2-二氯丙烷;氯化丙烯;DCP;1,2-Dichloropropane,20-250ppm 總代理銷售日本光明理化學(xué)工業(yè)株式會(huì)社北川式氣體檢測管,提供日本光明理化學(xué)工業(yè)株式會(huì)社北川式氣體檢測管介紹,日本光明理化學(xué)工業(yè)株式會(huì)社北川式氣體檢測管應(yīng)用,日本光明理化學(xué)工業(yè)株式會(huì)社北川式氣體檢測管價(jià)格,日本光明理化學(xué)工業(yè)株式會(huì)社北川式氣體檢測管說明書,日本光明理化學(xué)工業(yè)株式會(huì)社北川式氣體檢測管售后www.yd17.cn

                      更新時(shí)間:2025-01-01

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                      甲基溴氣體檢測管157SB METHYL BROMIDE 20-250ppm

                      甲基溴氣體檢測管157SB METHYL BROMIDE 20-250ppm

                      157SB
                      1. PERFORMANCE
                      1) Measuring range :10-500ppm
                      Number of pump strokes 1(100ml)
                      2) Sampling time :2 minutes/1 pump stroke
                      3) Detectable limit :1 ppm
                      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→Reddish orange
                      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 red Orthoquinone
                      is produced.
                      CH3Br+I(xiàn)2O5+CrO3+H2SO4→Br2
                      4. CALIBRATION OF THE TUBE
                      GAS CHROMATOGRAPHY
                      5. INTERFERENCE AND CROSS SENSITIVITY
                      10
                      30
                      50
                      100
                      150
                      200
                      300
                      400
                      500
                      ppm
                      100ml
                      GAS To pump
                      (Brown) (White)
                      PRETREAT TUBE DETECTOR TUBE
                      Tube No.
                      157SA METHYL BROMIDE
                      Substance ppm Interference ppm Coexistence
                      Chlorine 1 Similar stain is produced. 1 Higher readings are given.
                      Bromine 1 〃1 〃
                      Nitrogen dioxide 1 〃1 〃
                      Dichloromethane 500 〃500 〃
                      Chloroform 50 〃50 〃
                      Ethylene dibromide 50 〃50 〃
                      Trichloroethylene 50 〃50 〃
                      Tetrachloroethylene 50 〃50 〃
                      TEMPERATURE CORRECTION TABLE
                      Scale True Concentration (ppm)
                      Readings 0℃ 5℃ 10℃ 15℃ 20℃ 30℃ 40℃
                      (ppm) (32°F) (41°F) (50°F) (59°F) (68°F) (86°F) (104°F)
                      500 - - - 620 500 430 390
                      400 - - 630 475 400 360 325
                      300 - 675 430 345 300 280 260
                      200 580 320 235 210 200 190 175
                      150 260 185 160 150 150 140 130
                      100 120 110 100 100 100 95 90
                      50 50 50 50 50 50 50 50
                      185
                      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

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