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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>171SC甲醛HCHO氣體測毒管171SC FORMALDEHYDE 0.05-4.0ppm

                      甲醛HCHO氣體測毒管171SC FORMALDEHYDE 0.05-4.0ppm

                      簡要描述:

                      甲醛HCHO氣體測毒管171SC FORMALDEHYDE 0.05-4.0ppm,新裝修的房子里一般甲醛都會超標(biāo),只要在新房里放上一兩盆吊蘭,甲醛就全部都會被吸收。家庭去除甲醛的辦法在室內(nèi)甲醛含量超過國家標(biāo)準(zhǔn)1倍以上時,就需要從根源上去除甲醛了,目前Z有效的方法是植物草本噴劑去除甲醛。光觸媒、植物去除、甲醛清除劑、空氣凈化器、純中草藥噴劑分解法。甲醛去除是一個緩慢的過程(家庭裝修中的甲醛釋放周朝一般是3到15年)。人體接觸可以清水沖洗。工作環(huán)境中有甲醛可以戴防毒口罩。家庭裝修盡量不要使用太多

                      更新時間:2025-01-01

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                      甲醛HCHO氣體測毒管171SC FORMALDEHYDE 0.05-4.0ppm

                      甲醛HCHO氣體測毒管171SC FORMALDEHYDE 0.05-4.0ppm

                      Tube 71SC

                      1. PERFORMANCE
                      1) Measuring range :0.1-4.0 ppm 0.05-2.0 ppm
                      Number of pump strokes 5(500mr) 10(1000ml)
                      2) Sampling time :5 minutes/5 pump strokes
                      3) Detectable limit :0.03 ppm(1000ml)
                      4) Shelf life :1 year (Necessary to store in a refrigerated place ; 0~10℃)
                      5) Operating temperature :10~40℃
                      6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
                      7) Reading :Direct reading from the scale calibrated by 5 pump strokes
                      8) Colour change :Yellow→Pink
                      2. RELATIVE STANDARD DEVIATION
                      RSD-low:10% RSD-mid.:10% RSD-high:10%
                      3. CHEMICAL REACTION
                      By reaction with Hydroxylamine phosphate acid is liberated and PH indicator is discoloured.
                      HCHO+(NH3OH)3?H3PO4→H3PO4+HCH=NOH+H2O
                      4. CALIBRATION OF THE TUBE
                      COLOURIMETRY METHOD
                      5. INTERFERENCE AND CROSS SENSITIVITY
                      GAS To pump
                      4.0
                      3.0
                      2.0
                      1.0
                      0.1
                      0.5
                      0.3
                      500ml
                      ppm
                      (White)
                      DEHUMIDIFIER
                      171SC FORMALDEHYDE
                      Substance ppm Interference ppm Coexistence
                      Ammonia
                      The accuracy of readings is 10 Lower readings are given. Inlet
                      not affected. side is faded the discoloured layer.
                      Higher readings are given. The
                      Nitrogen dioxide 3 Similar stain is produced. 3 top of discoloured layer becomes
                      unclear.
                      Acetaldehyde 〃Higher readings are given.
                      Toluene
                      The accuracy of readings is
                      not affected.
                      TEMPERATURE CORRECTION TABLE
                      Tube Corrected Concentration (ppm)
                      Readings 10℃ 20℃ 30℃ 40℃
                      (ppm) (50°F) (68°F) (86°F) (104°F)
                      4.0 6.4 4.0 2.4 1.6
                      3.5 5.6 3.5 2.1 1.4
                      3.0 4.8 3.0 1.8 1.2
                      2.5 4.0 2.5 1.5 1.0
                      2.0 3.2 2.0 1.2 0.8
                      1.5 2.4 1.5 0.9 0.6
                      1.0 1.6 1.0 0.6 0.4
                      0.5 0.8 0.5 0.3 0.2
                      0.3 0.5 0.3 0.18 0.12
                      0.1 0.16 0.1 0.06 0.04
                      (NOTE)
                      In case of 10 pump strokes, following formula is available for the actual concentration.
                      Actual concentration = 1/2 × Tmperature corrected value

                       
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