Merck, 1.11117, Ammonium Test

General description
Method: colorimetric, acc. to Neßler, with color card and sliding comparator 0.5 - 1 - 2 - 3 - 5 - 7 - 10 mg/l NH₄⁺ MQuant®
This MQuant® Ammonium test (formally MColortest®) is suitable for the colorimetric determination using the easy to use color card. The evaluation considers the untreated sample so even turbid and colored water samples can be analyzed. The test measures both ammonium ions and dissolved ammonia in e.g. groundwater and surface water, seawater, drinking water and aquarium water. Ammonium nitrogen (NH4-N) occurs partly in the form of ammonium ions and partly as ammonia. A pH-dependent equilibrium exists between the two forms.

Method
Ammonium ions react with Neßler′s reagent to form a yellow-brown compound. The ammonium concentration is measured semiquantitatively by allocating the color to a value on a reference scale.

The test can be used in:
Groundwater and surface water
Drinking water
Wastewater
Aquarium water, waters from aquaculture
Boiler and boiler feed water, cooling water
Swimming-pool water
Soils and fertilizers after appropriate sample pretreatment

This test is not suited for seawater.
Legal Information
MCOLORTEST is a registered trademark of Merck KGaA, Darmstadt, Germany
MQUANT is a registered trademark of Merck KGaA, Darmstadt, Germany
Disclaimer
For U.S. Customers: Contains mercury; Do not place in trash - dispose according to local, state, or federal laws.