What is the standard incubation period and temperature for measuring 5-day Biochemical Oxygen Demand (BOD5)?
A3 days at 27°C
B5 days at 20°C
C7 days at 25°C
D10 days at 30°C
Explanation
Standard BOD testing measures the amount of dissolved oxygen consumed by aerobic microorganisms to biologically degrade organic matter over an incubation period of 5 days at a controlled temperature of 20°C.
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