An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

SW-846 Test Method 9210A: Potentiometric Determination of Nitrate in Aqueous Samples with an Ion-Selective Electrode

The following document discusses the method to measure simple solubilized nitrate in drinking water, natural surface water, groundwater, domestic and industrial wastewater, soil extracts, and aqueous extracts of other solids.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.