Merck, 1.11106.0001, Chloride Test

Chloride is found in the earth´s crust and can therefore also be found in all natural waters at some concentration. This basic parameter of water analysis can be checked using our Chloride Test. This MQuant® Chloride test (formally MColortest®) is suitable for the titrimetric determination using a graduated syringe. Method In nitric solution chloride ions are titrated with mercury(II) nitrate solution against 1,5-diphenylcarbazone as the indicator, forming slightly dissociated mercury(II) chloride in the process. At the titration end-point, excess mercury(II) ions react with the indicator to form a blue-violet complex. The chloride concentration is determined from the consumption of titration solution (mercurimetric determination). The test can be used in •Groundwater, surface water, and seawater (after dilution) •Waters from aquaculture •Drinking water and mineral water •Water for concrete in the construction industry •Industrial water and wastewater •Boiler and boiler feed water, cooling water •Swimming-pool water •Food after appropriate sample pretreatment •Soils and fertilizers after appropriate sample pretreatment