Definition: The word "Rmax25" is a term used in environmental studies to indicate water quality, specifically that at the most critical point of an aquatic ecosystem or stream where dissolved oxygen levels are critically low (low Rmax). This level is typically around 25 ppm or less, and it's critical for maintaining healthy ecosystems. Defining this term can help in understanding how different types of pollutants may affect aquatic environments, influencing water quality parameters.
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