Part2:Colony-counttechniqueat44degreesCusingmembranes
ThisstandardspecifiesamethodfortheenumerationofpresumptiveEscherichiacolibymeansofacolony-counttechniqueat44??C.
Themethodisapplicabletomilk,liquidmilkproducts,driedmilk,driedsweetwhey,driedbuttermilk,lactose,acidcasein,lacticcaseinandrennetcasein,caseinateanddriedacidwhey,cheeseandprocessedcheese,butter,frozenmilkproducts(includingedibleices),andcustard,dessertsandcream.
ThemethodspecifiedinthisstandardisthepreferredmethodforsamplesinwhichcomparativelylargenumbersofpresumptiveEscherichiacoli(morethan100pergramor10permillilitre)aresuspected.
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