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关 键 词：检测管乙醇C2H5OH
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发布时间：2010-12-20
Ethanol No.112D C2H5OH Performance Measuring Range 100 to 25000 ppm Sampling Hours 1 to 10 hours Detecting Limit 0.05 ppm (10 hours) Color Change Yellow → Brown Reaction Principle C2H5OH + Cr6++ H2SO4 → Cr3+ Coefficient of Variation 15% (for 1000 to 3000 ppm-hr), 10% (for 3000 to 25000 ppm-hr) Shelf Life 3 Year Corrections for temperature & humidity Unnecessary Store the tubes at cool and dark place. Possible coexisting substances and their interferences (NOTE) Substance Concentration Interference Change color by itself Methanol,Esters No No Isopropyl alcohol + Brown Calibration gas generation Diffusion tube method TLV-TWA TLV-STEL Explosive range 1000 ppm - 3.3 to 19%
