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Analysis of Nitrate and Nitrite in Milk

Analysis of Nitrate and Nitrite in MilkThermo Fisher Scientific Inc. is pleased to announce a new application for the determination of nitrite and nitrate in milk by ion chromatography (IC) with suppressed conductivity detection using in-line sample preparation. Application Note 279: Time Savings and Improved Reproducibility of Nitrate and Nitrite Ion Chromatography Determination in Milk Samples describes the method where the prepared sample is separated on the high-capacity Thermo Scientific Dionex IonPac TM AS20 hydroxide-selective anion-exchange column to resolve nitrite and nitrate from the remaining sample components. The Thermo Scientific Dionex Reagent-Free TM IC ( RFIC TM) system automatically prepares the separation eluent to achieve high separation reproducibility. The automated sample and eluent preparation saves time and improves the reproducibility of the analysis.

Excessive consumption of nitrite and nitrate has been implicated as a cause in some health problems and, as a result, the United States Environmental Protection Agency ( U.S. EPA) has regulated the amount of nitrite and nitrate in drinking water. These same limits should be applied to milk even though the FDA and USDA have not required testing of milk for nitrate and nitrate.

This application note and many others can be found at www.thermoscientific.com/dionex under the Documents tab.

About Thermo Fisher Scientific

Thermo Fisher Scientific Inc. is the world leader in serving science. Our mission is to enable our customers to make the world healthier, cleaner and safer. With revenues of nearly $11 billion, we have approximately 37,000 employees and serve customers within pharmaceutical and biotech companies, hospitals and clinical diagnostic labs, universities, research institutions and government agencies, as well as in environmental and process control industries. We create value for our key stakeholders through two premier brands, Thermo Scientific and Fisher Scientific, which offer a unique combination of continuous technology development and the most convenient purchasing options. Our products and services help accelerate the pace of scientific discovery, and solve analytical challenges ranging from complex research to routine testing to field applications.


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