The tabled figures are for total aerobic plate count, cfu / ml at 30 �C ( minimum 48 hours incubation ) with colony count determined by the pour plate method according to ISO 6222 ( 21 ) or spread plate method on yeast extract agar.
2.
The fluctuation method is comparable to the traditional pour plate method in terms of sensitivity and accuracy, however, it does have a number of advantages : it needs less test sample, it has a simple colorimetric endpoint, counting the number of positive wells out of possible 96 or 48 wells is much less time consuming than counting individual colonies on an agar plate.
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