产品图片	产品名称/型号	产品简单介绍
	211LL硫化物水质快速检知管S2- 211LL硫化物水质快速检知管S2-	Performance Measuring Range 10 to 100 ppm Sampling Time 2 minutes Detecting Limit 1 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- 20 ppm No No (1%) Cl- 100 ppm No No (5%) Cr6+ 0.2 ppm - Yellow(1ppm) CO32- 500 ppm No No (1%) S2O32-
	211H硫化物水质检知管 S2- 211H硫化物水质检知管 S2-	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 dem
	211M硫化物检测管 S2- 211M硫化物检测管 S2-	Performance Measuring Range 2 to 300 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 Cl- 15000 ppm + No CrO42- 50 ppm - Yellow CO32- 500 ppm + No SO32- 200 ppm - No S2O32- 100 ppm + No
	284铜离子检测管 Cu 284铜离子检测管 Cu	Performance Measuring Range 1 to 20 mg/L Sampling Time 5 minutes Detecting Limit 0.5 mg/L Colour Change White → Orange Reaction Principle Cu2+ + Reduction Agent → Cu+ + BathocuprimCu+ → Complex compound Shelf Life 2 Years Corrections for temperature & humidity Unnecessary Store the tubes at cool and dark place. Possible coexisting substances and their interferences (NOTE)
	281铁离子检测管 Fe2+ 281铁离子检测管 Fe2+	Performance Measuring Range (5) to 50 mg/L Sampling Time 5 minutes Detecting Limit 1.0 mg/L Colour Change White → Orange Reaction Principle Fe2+ + 1,10 Fenantoroline (White) → Complex compound Shelf Life 3 Years Corrections for temperature & humidity Unnecessary Store the tubes at cool and dark place. Possible coexisting substances and their interferences (NOTE)