Hello everyone
Scenario of work
I am making composite sampling with respect to time (2 hr) and proportional to flow
I prepare 6 bottle for 12 hr sampling and note the flow before each sample collection (1 bottle is one sample of single point)
Then I mix all the six bottle to a new bottle, quantity sample proportional to flow.

question regarding this scenario working is that,
While transferring the sample into new bottle is BOD (biochemical oxygen demand) get effected or not.
If effected so what we do to minimize the effect.
Note:
(During transferring we use measuring cylinder pipette tube and new bottle for composite sample)
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Syed Alvi M.ASCE
junior engineer
Techno Consult International
Karachi
923242637117
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