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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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                      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>167S硒化氫H2Se氣體檢測管167S HYDROGEN SELENIDE 1-600ppm

                      硒化氫H2Se氣體檢測管167S HYDROGEN SELENIDE 1-600ppm

                      簡要描述:

                      硒化氫H2Se氣體檢測管167S HYDROGEN SELENIDE 1-600ppm,急性中毒:接觸數(shù)分鐘至3小時內(nèi),陸續(xù)出現(xiàn)中毒癥狀:流淚、回痛、咳嗽,伴有胸悶、胸痛。重者進(jìn)一步發(fā)展為化學(xué)性肺炎或中毒性肺水腫,患者出現(xiàn)呼吸困難,心跳加快,面色蒼白,皮膚粘膜紫紺。接觸本品可引起皮疹。現(xiàn)場應(yīng)急監(jiān)測方法:氣體檢測管法

                      更新時間:2025-01-01

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                      硒化氫H2Se氣體檢測管167S HYDROGEN SELENIDE 1-600ppm

                      硒化氫H2Se氣體檢測管167S HYDROGEN SELENIDE 1-600ppm

                      Tube 67S
                      1. PERFORMANCE
                      1) Measuring range :5-600 ppm 1-120 ppm
                      Number of pump strokes 1(100ml) 5(500ml)
                      2) Sampling time :1.5 minutes/1 pump stroke
                      3) Detectable limit :0.5 ppm(500ml)
                      4) Shelf life :1 year
                      5) Operating temperature :0~40℃
                      6) Reading :Direct reading from the scale calibrated by 1 pump stroke
                      7) Colour change :Pale yellow→Dark brown
                      2. RELATIVE STANDARD DEVIATION
                      RSD-low:10% RSD-mid.:10% RSD-high:5%
                      3. CHEMICAL REACTION
                      By reacting with Gold chloride(III), Colloidal gold is liberated.
                      H2Se+AuCI3(III)→Au
                      4. CALIBRATION OF THE TUBE
                      STANDARD GAS CYLINDER METHOD
                      5. INTERFERENCE AND CROSS SENSITIVITY
                      GAS To pump
                      600
                      550
                      500
                      450
                      400
                      350
                      300
                      250
                      200
                      150
                      100
                      50
                      10
                      5
                      100ml
                      ppm
                      ????
                      ????
                      167S HYDROGEN SELENIDE
                      Substance ppm Interference ppm Coexistence
                      Acetylene 3% Higher readings are given.
                      Carbon monoxide 0.1% 〃
                      Sulphur dioxide Pale blue stain is produced. 〃
                      Hydrogen sulphide 10 Brown stain is produced. 〃
                      Mercury vapours Similar stain is produced.
                      Arsine 〃10 〃
                      Iron carbonyl 〃10 〃
                      Nickel carbonyl 〃10 〃
                      (NOTE)
                      When the concentration is below 5 ppm, 5 pump strokes can be used to determine the lower concentration.
                      Following formula is available for the actual concentration.
                      Actual concentration=1/5×Reading 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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