This version is an update to the 24th edition of Standard Methods for the Examination of Water and Wastewater and was posted online April 18, 2025.

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CITATION

Standard Methods Committee of the American Public Health Association, American Water Works Association, and Water Environment Federation. 3500-k potassium In: Standard Methods For the Examination of Water and Wastewater. Lipps WC, Baxter TE, Braun-Howland E, editors. Washington DC: APHA Press.

DOI: 10.2105/SMWW.2882.060

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