Are you referring to the BOD 5 day ATU test?
I'd have thought a site probe was as good as a lab based one as long
as the instrument is properly calibrated, well maintained and used by
someone who knows what they are doing. Unfortunately all too often
these conditions are not met for site based analysis.
Seeing as the lab test for BOD I know about is this 5 day one I doubt a
field measurement will be directly comparable?
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