Sample preparation/dilution	Non selective/selective enrichment	Isolation, identification and/or enumeration	Confirmation
Total aerobic bacteria	Peptone water (buffered); acc. to ISO 6579		Plate count agar Standard I nutrient agar TGE agar Tryptic soy agar
Total Yeast and Moulds	Peptone water (buffered); acc. to ISO 6579		Dichloran Glycerol (DG18)-Agar Dichloran Rose-Bengal Chloramphenicol Agar (DRBC) Malt extract agar Muller-Kauffmann Tetrathionate Novobiocine enrichment broth acc. to ISO OGYE selective supplement Potato dextrose agar Rose-Bengal Chloramphenicol Agar (RBC) YGC agar Yeast extract agar