Sigma-Aldrich Ammonium Test 0.2 - 0.5 .

Specific Analyte(S)

ammonium

Quality Level

100

Measuring Range

0.2-8.0 mg/L (NH₄ ⁺)

Compatibility

for use with MCOLORTEST^®

Detection Method

colorimetric

Storage Temp.

15-25°C

Related Categories

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Colorimetric & Titrimetric Test Kits

General Description

Method: colorimetric with color-disk comparator 0.2 - 0.5 - 0.8 - 1.3 - 2.0 - 3.0 - 4.5 - 6.0 - 8.0 mg/l NH MQuant^®The MQuant^®Ammonium test (formally MColortest^®) measures both ammonium ions and dissolved ammonia in e.g. groundwater and surface water, drinking water and aquarium water. A pH-dependent equilibrium exists between the two forms.

Method
In strongly alkaline solution ammonia reacts with a chlorinating agent to form monochloramine. This in turn reacts with thymol to form a blue indophenol derivative. Due to the intrinsic yellow coloration of the reagent blank, the measurement solution is yellow-green to green in color. The ammonium concentration is measured semiquantitatively by visual comparison of the color of the measurement solution with the color fields of a color disk. The test evaluates the color reaction based on the transmitted light method. So even turbid and colored water samples can be analyzed without further preparation.
The color disk is made of very durable, lightfast plastic, thus suitable for industrial areas and wet environments.

The test is suitable for ammonium determination in

• Groundwater and surface water
• Drinking water and mineral water
• Aquarium water, waters from aquaculture
• Boiler and boiler feed water, cooling water
• Process water
• Wastewater
• Electroplating wastewater
• Swimming-pool water
• Nutrient solutions for fertilization
• Food after appropriate sample pretreatment

This test is not suited for seawater.

Application

• Evaluation of Water Ammonium Ion Test Kit and Its Feasibility for the Analysis of Protein in Food.: This study assesses a water ammonium ion test kit′s application in food protein analysis, highlighting its potential benefits for ensuring food safety and quality (Wu et al., 2022).


• Technical note: Evaluation of a colorimetric point-of-care test for measuring urine ammonium concentration in periparturient dairy cattle.: Discusses a colorimetric point-of-care test for measuring urine ammonium in dairy cattle, crucial for animal health monitoring and management (Megahed & Constable, 2020).

MCOLORTEST is a registered trademark of Merck KGaA, Darmstadt, GermanyMQUANT is a registered trademark of Merck KGaA, Darmstadt, GermanyGHS02,GHS05,GHS07H225 - H290 - H302 - H314 - H336 - H412P210 - P273 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338