Determination of Biochemical Oxygen Demand (BOD5)

1. Determine the 5 day DO concentration on each of the seed controls. 2. Use the same rule for DO depletion as in all other BODs (at least 2.0 mg/L DO depletion and at least 1.0 mg/L residual DO (after 5 days) (Standard Methods, 18th edition)). 3. ................
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