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Dissolved oxygen analysis measures the amount of gaseous oxygen (O2) dissolved in an aqueous solution.
Oxygen gets into water by diffusion from the surrounding air, by aeration (rapid movement), and as a waste product of photosynthesis.
When performing the dissolved oxygen test, only grab samples should be used, and the analysis should be performed immediately. Therefore, this is a field test that should be performed on site.
Adequate dissolved oxygen is necessary for good water quality. Oxygen is a necessary element to all forms of life.
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