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关 键 词：硫化物水质检知管
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发布时间：2010-03-11
Performance Measuring Range 1 to 100 ppm Sampling Time 2 minutes Detecting Limit 0.5 ppm Colour Change White → Brown Reaction Principle S2- + Pb(CH3COO)2→ PbS Shelf Life 3 Years Corrections for temperature & humidity Unnecessary Store the tubes at cool and dark place. Possible coexisting substances and their interferences (NOTE) Substance Concentration Interference Change colour by itself to CO32- 500 ppm + No Cl- 5000 ppm + No CrO42- 25 ppm - Yellow SO32- 300 ppm - No S2O32- 50 ppm Unclear demarcation No
