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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>176S甲基碘CH3I氣體檢測管176S METHYL IODIDE 2-40ppm

                      甲基碘CH3I氣體檢測管176S METHYL IODIDE 2-40ppm

                      簡要描述:

                      甲基碘CH3I氣體檢測管176S METHYL IODIDE 2-40ppm,Measuring range :4-40 ppm 2-20 ppm,碘化鉀/碘甲烷氣體檢測管,國家標(biāo)準(zhǔn),中國職業(yè)接觸限值(GBZ 2—2002)Z高容許濃度(MAC)時間加權(quán)平均容許濃度(TWA)10 mg/m3,短時間接觸容許濃度(S)25 mg/m3,www.yd666.com

                      更新時間:2024-12-26

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                      甲基碘CH3I氣體檢測管176S METHYL IODIDE 2-40ppm

                      甲基碘CH3I氣體檢測管176S METHYL IODIDE 2-40ppm

                      Tube 76S

                      1. PERFORMANCE
                      1) Measuring range :4-40 ppm 2-20 ppm
                      Number of pump strokes 2(200ml) 4(400ml)
                      2) Sampling time :4 minutes/2 pump strokes
                      3) Detectable limit :0.5 ppm(400ml)
                      4) Shelf life :8 months
                      5) Operating temperature :10~40℃
                      6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
                      7) Reading :Direct reading from the scale calibrated by 2 pump strokes
                      8) Colour change :White→Grey
                      2. RELATIVE STANDARD DEVIATION
                      RSD-low:10% RSD-mid.:10% RSD-high:10%
                      3. CHEMICAL REACTION
                      Iodine pentoxide is reduced.
                      CH3I+I(xiàn)2O5+H2SO4→I2+CO2+H2O
                      4. CALIBRATION OF THE TUBE
                      GAS CHROMATOGRAPHY
                      5. INTERFERENCE AND CROSS SENSITIVITY
                      40
                      35
                      30
                      25
                      20
                      15
                      10
                      468
                      ppm
                      GAS To pump
                      (Yellow)
                      PRETREAT TUBE DETECTOR TUBE
                      176S METHYL IODIDE
                      Substance Interference ppm Coexistence
                      Acetone Similar stain is produced. 700 Higher readings are given.
                      Hydrogen sulphide FIG.1 〃7 〃
                      Hexane FIG.2 〃500 〃
                      Benzene 2 Lower readings are given.
                      Toluene 2 〃
                      Xylene 2 〃
                      Halogenated hydrocarbons Double-layer stain is produced and
                      accurate readings are affected.
                      0
                      30
                      20
                      Hydrogen sulphide〔ppm〕?
                      FIG.1 Influence of Hydrogen sulphide
                      Methyl iodide
                      indicating value 〔ppm〕
                      510 15 20 25 3035
                      10
                      0
                      20
                      Hexane〔ppm〕?
                      FIG.2 Influence of Hexane
                      Methyl iodide
                      indicating value 〔ppm〕
                      500 1000 1500 2000 2500
                      10
                      TEMPERATURE CORRECTION TABLE
                      Scale True Concentration (ppm)
                      Readings 0℃ 10℃ 20℃ 30℃ 40℃
                      (ppm) (32°F) (50°F) (68°F) (86°F) (104°F)
                      40 - - 40 46 52
                      35 - 52 35 42 49
                      30 54 39 30 37 44
                      25 37 27 25 25 23
                      20 30 22 20 23 30
                      15 24 17 15 17 24
                      10 17 11 10 12 17
                      5 10 5 5 5 10
                      (NOTE)
                      In case of 4 pump strokes, following formula is available for the actual concentration.
                      Actual concentration = 1/2 × Tmperature corrected value

                      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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