For isolation and selection of fungi. POTATO DEXTOSE AGAR is used for plate counts of yeasts and molds in the examination of Pharmaceutical products. It conforms to harmonized USP/BP/EP/JP requirements for the growth of fungi.1,2,3,4 Potato Dextrose Agar can be used for growing clinically significant yeast and molds.5 Adjusting the pH of the medium by tartaric acid to 3.5 inhibits the bacterial growth. Heating the medium after acidification should be avoided as it may hydrolyze the agar which can render the agar unable to solidify. The nutritionally rich base Potato infusions encourage specially yeast and mold growth. Dextrose is the fermentable carbohydrate as carbon and energy source. Agar is the solidifying agent. Inoculate Potato Dextrose Agar (TMH 105) medium with a small number (not more than 100 cfu) of the appropriate microorganism and incubate at 20-25°C for 2-5 days.