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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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                      甲酸HCOOH氣體檢測(cè)管216S FORMIC ACID 1-50ppm

                      簡(jiǎn)要描述:

                      甲酸HCOOH氣體檢測(cè)管216S FORMIC ACID 1-50ppm,別稱:蟻酸(formic acid)健康危害: 主要引起皮膚、粘膜的刺激癥狀。接觸后可引起結(jié)膜炎、眼瞼水腫、鼻炎、支氣管炎,重者可引起急性化學(xué)性肺炎。濃甲酸口服后可腐蝕口腔及消化道粘膜,引起嘔吐、腹瀉及胃腸出血,甚至因急性腎功能衰竭或呼吸功能衰竭而致死。皮膚接觸可引起炎癥和潰瘍。偶有過敏反應(yīng)。

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

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                      甲酸HCOOH氣體檢測(cè)管216S FORMIC ACID 1-50ppm

                      甲酸HCOOH氣體檢測(cè)管216S FORMIC ACID 1-50ppm

                      Tube No.216S
                      1. PERFORMANCE
                      1) Measuring range :1-50 ppm
                      Number of pump strokes :1(100ml)
                      2) Sampling time :1 minute/1 pump stroke
                      3) Detectable limit :0.1 ppm(100ml)
                      4) Shelf life :3 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 :Pale pink→Yellow
                      2. RELATIVE STANDARD DEVIATION
                      RSD-low:10% RSD-mid.:10% RSD-high:10%
                      3. CHEMICAL REACTION
                      By reacting with alkali, PH indicator is discoloured.
                      HCO2H+NaOH→HCO2Na+H2O
                      4. CALIBRATION OF THE TUBE
                      VAPOUR PRESSURE METHOD
                      5. INTERFERENCE AND CROSS SENSITIVITY
                      GAS To pump
                      50
                      40
                      30
                      20
                      10
                      5
                      13
                      100ml
                      ppm
                      216S FORMIC ACID
                      Substance ppm Interference ppm Coexistence
                      Sulphur dioxide Similar stain is produced. HCO2Hconc. ×1/20 Higher readings are given.
                      Nitrogen dioxide 300 〃10 The top of discoloured layer
                      becomes unclear.
                      Hydrogen chloridFeIG.1 Pink stain is produced. HCO×2H2conc. Higher readings are given.
                      Chlorine FIG.2 Bprluoediusche yde. llow stain is 5 〃
                      Acetic acid Similar stain is produced. 〃
                      0
                      60
                      10
                      20
                      30
                      40
                      50
                      Hydrogen chloride〔ppm〕?
                      FIG.1 Influence of Hydrogen chloride
                      Formic acid indicating value 〔ppm〕
                      100 200 300
                      Coexistence
                      Interference
                      0
                      60
                      10
                      10
                      20
                      20
                      30
                      30
                      40
                      40
                      50
                      50
                      Chlorine〔ppm〕?
                      FIG.2 Influence of Chlorine
                      Formic acid indicating value 〔ppm〕
                      Coexistence
                      Interference
                      TEMPERATURE CORRECTION TABLE
                      Scale True Concentration (ppm)
                      Readings 0℃ 10℃ 20~40℃
                      (ppm) (32°F) (50°F) (68°F)
                      50 82 60 50
                      40 57 45 40
                      30 36 32 30
                      20 22 21 20
                      10 10 10 10
                      5 5 5 5
                      2 2 2 2
                      (NOTE)
                      This tube scale is calibrated based on Acetic acid and the same scale is available for Formic acid.

                      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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