Chloride Test

chloride

100

for use with MCOLORTEST^®

titrimetric

15-25℃

Method: titrimetric with dropping bottle MQuant^®
Chloride is found in the earth´s crust and can therefore also be found in all natural waters at some concentration. This MQuant^® Chloride test (formally MColortest^®) is suitable for the titrimetric determination using a convenient dropping bottle.

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

This test is suitable to detect chloride interferences which are a mayjor reason for wron COD readings. Therefore it can serve as pretest for COD measurements with e.g. our Spectroquant^® COD cell tests for seawater/samples with high chloride content 1.17058 and 1.17059.

MCOLORTEST is a registered trademark of Merck KGaA, Darmstadt, Germany
MQUANT is a registered trademark of Merck KGaA, Darmstadt, Germany
SPECTROQUANT is a registered trademark of Merck KGaA, Darmstadt, Germany