Accumet XL 20 User Manual page 154

DO Operation: BOD Measurement
XL40 and 60 meters
To measure BOD, a sample is seeded and incubated in the dark at 20°C for five days. The
dissolved oxygen concentration is then measured and subtracted from the initial, pre-incubation
dissolved oxygen concentration. The difference is a measure of the Biochemical Oxygen Demand
(BOD) of the sample.
Before measuring BOD, remember to setup your BOD measuring mode parameter from the BOD
Setup screen. Once the meter is standardized you are ready to measure DO for a BOD
measurement.
BOD Measure screen with STABLE indicator ON
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