If you add 43 of food in 350 ml water and dilution of 1: 6 is made then from this dilution 1: 90 is made and from this 1 ml is added to 60 ml of water then 0.1 ml from this last dilution is plated and after incubation 143 colonies are counted what is the total count per g of original sample

Solution:

DF = Initial dilution * Subsequent dilution * Amount Plated

Total Count Per g = * Colonies Counted

Initial dilution :

Subsequent dilution :

Amount Plated : 0.1

Colonies Counted : 143

DF =

DF=

DF =

Total Count Per g =

Total Count Per g =

i belive those are the ones that are under 90 degreese.