Nutrient agar - Wikipedia Nutrient agar Streak plates of several bacterial species on nutrient agar plates Nutrient agar is a general purpose medium supporting growth of a wide range of non-fastidious organisms. It typically contains ( mass / volume ) : 0.5 % Peptone - this provides organic nitrogen 0.3 % beef extract / yeast extract - the water - soluble content of these contribute vitamins, carbohydrates, nitrogen, and salts 1.5 % agar - this gives the mixture solidity 0.5 % Sodium Chloride - this gives the mixture proportions similar to those found in the cytoplasm of most organisms distilled water - water serves as a transport medium for the agar 's various substances pH adjusted to neutral ( 6.8 ) at 25 ° C. These ingredients are combined and boiled for approximately one minute to ensure they are mixed and to sterilize them. Then they are cooled to around 50 ° C ( 122 ° F ) and poured into Petri dishes which are covered immediately. Once the dishes hold solidified agar, they are stored upside down and are often refrigerated until used. Inoculation takes place on warm dishes rather than cool ones : if refrigerated for storage, the dishes must be rewarmed to room temperature prior to inoculation. See also Plate count agar Bacteria Agar Bacterial growth References Jump up ^ American Public Health Association, American Chemical Society, Association of Official Agricultural Chemists ( 1920 ). Standard Methods for the Examination of Water and Sewage. American public health association. p. 95. CS1 maint : Multiple names : authors list ( link ) Further reading Lapage S., Shelton J. and Mitchell T., 1970, Methods in Microbiology ', Norris J. and Ribbons D., ( Eds. ), Vol. 3A, Academic Press, London. MacFaddin J.F., 2000, Biochemical Tests for Identification of Medical Bacteria, 3rd Ed., Lippincott, Williams and Wilkins, Baltimore. Downes F.P. and Ito K., ( Ed. ), 2001, Compendium of Methods for the Microbiological Examination of Foods, 4th Ed., American Public Health Association, Washington, D.C. American Public Health Association, Standard Methods for the Examination of Dairy Products, 1978, 14th Ed., Washington D.C. Growth media / agar plates Selective media Gram positive Actinobacteria Mycobacterium tuberculosis Löwenstein -- Jensen medium Middlebrook 7H9 Broth Middlebrook 7H10 Agar Middlebrook 7H11 Agar Mycoplasma pneumoniae Eaton 's agar Firmicutes Corynebacterium diphtheriae Hoyle 's agar Enterococcus Bile esculin agar Lactobacillus MRS agar Lactococcus M17 agar Staphylococcus Mannitol salt agar Gram negative Alphaproteobacteria Brucella Brucella agar Farrell 's medium Betaproteobacteria Neisseria Thayer - Martin agar Gammaproteobacteria Bordetella Bordet - Gengou agar Enterobacteriaceae VRBD agar Haemophilus influenzae / Legionella pneumophila Buffered charcoal yeast extract agar Pseudomonas aeruginosa Cetrimide agar Salmonella XLT agar DCA agar Salmonella / Shigella XLD agar Differential media Lactose fermenting gram negative MacConkey agar / Sorbitol - MacConkey agar Eosin methylene blue Hektoen enteric agar sulfur Bismuth sulfite agar Fungal media Czapek medium Dermatophyte test medium Potato dextrose agar Sabouraud agar Nonselective media Chocolate agar Nutrient agar Plate count agar Other / ungrouped media Cystine lactose electrolyte deficient agar Cystine tryptic agar Endo agar Lysine iron agar slant Müller - Hinton agar / PNP agar R2a agar Simmons ' citrate agar Trypticase soy agar Tryptic soy broth TSI slant This microbiology - related article is a stub. You can help Wikipedia by expanding it. Retrieved from `` https://en.wikipedia.org/w/index.php?title=Nutrient_agar&oldid=831293233 '' Categories : Microbiological media Microbiology stubs Hidden categories : CS1 maint : Multiple names : authors list All stub articles Talk About Wikipedia Español فارسی മലയാളം Nederlands ไทย Türkçe Українська Edit links This page was last edited on 19 March 2018, at 21 : 05. About Wikipedia

Question: nutrient agar is an example of what medium
Answer: general purpose medium