Dilution plating - viable count (only living cells)
The sample is diluted by the serial dilution technique and then the dish containing the most colonies and with no clumping is chosen and the colonies are counted, to find the total viable cell count the number of colonies is multiplied by the dilution factor.
In this method each dilution decreases accuracy so an average is taken. Should count the smallest dilution with no clumping as the clumping could lead to an inaccurate count and underestimate. As only living bacteria grow colonies - assume each colony is produced by one bacteria.
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