If u have a dense laboratory culture of bacteria in a petri dish what is the best measure to report its density?

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Solution

Standard plate count/Colony forming units (CFUs): Manual Colony count upto 30, afterwards will be mentioned as Too numerous to count (TNTC)

Serial dilution with standard suspension(made up of McFarland Turbidity Standards)

Direct microscopic count

Turbidimetric Measurement: Measurement of cell concentration in suspension by optical density

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