产品说明
一般描述
Method: colorimetric, indophenol blue, with color card and sliding comparator 0.2 - 0.4 - 0.6 - 1 - 2 - 3 - 5 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, 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
In strongly alkaline solution ammonium nitrogen is present almost entirely as ammonia, which 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 allocating the color to a value on a reference scale.
The test can be used for ammonium determination in:
分析说明
应用测试:符合
法律信息
MCOLORTEST is a registered trademark of Merck KGaA, Darmstadt, Germany
MQUANT is a registered trademark of Merck KGaA, Darmstadt, Germany
产品性质
specific analyte(s) | ammonium |
质量水平 | 100 |
measuring range | 0.2-5 mg/L (NH4+) |
相容性 | for use with MQUANT® |
detection method | colorimetric |
储存温度 | 15-25℃ |