Aseptically add the six standard antibiotics, incubate at 37°C. Take a sterile Mueller-Hinton agar (MHA) plate or a nutrient agar (NA) plate. In stock and available to ship. Company. Mueller Hinton Agar, for Kirby-Bauer disk susceptibility testing, large 15x150mm plate, order by the package of 10 plates, by Hardy Diagnostics Mueller Hinton Media is recommended for use in the cultivation of a wide variety of microorganisms. Use fom below to request a Certificate of Analysis. Heat to boiling to dissove the medium completely. Mueller Hinton Media is recommended for use in the cultivation of a wide variety of microorganisms. Mueller Hinton Media contains Beef Extract, Acid Hydrolysate of Casein, Starch and Agar. Placing antibiotic disc in Mueller-Hinton agar medium Mueller Hinton Agar can be used for disk diffusion sensitivity testing of non-fastidious organisms. 6. If the bacterial suspension is too turbid, it can be diluted with more diluent. It is also used to isolate and maintain Neisseria and Moraxella species. Definition Mueller-Hinton Plate (MH Plate): A growth medium that is commonly used for antibiotic susceptibility testing and allows for even diffusion of the antibiotic in the medium. After incubation, the plates are observed for a ‘zone of inhibition’; a circular area relating to the level of antimicrobial activity upon the bacteria. Missed the LibreFest? If you can’t get the diameter because of an inadequate lawn or zones overlapping, measure the radius and multiply by 2. Principle And Interpretation The Mueller Hinton formulation was originally developed as a simple, transparent agar medium for the cultivation of Prepare Mueller-Hinton Agar Plates 1. Mueller Hinton Agar is a non-selective, non-differential and therefore it supports the growth of most non fastidious organism. Today, it is primarily used to test non-fastidious microorganisms using the Kirby-Bauer disk diffusion method. Perform effortless Antimicrobial Susceptibility Tests (AST) for fastidious organisms using Thermo Scientific Remel Mueller Hinton Agar with 5% Sheep Blood prepared media plates. Conforms to Kirby-Bauer specifications. After the streaking is complete, allow the plate to dry for 5 minutes. So, there is no need to hold the forceps in the flame for long periods of time. MHA is recommended for the diffusion of antimicrobial agents impregnated on paper disc through an agar gel as described in CLSI Approved Standard. Antibiotic discs can be placed on the surface of the agar … Mueller Hinton II Agar: Manufacturing Origin: United States: Shelf Life: 98 Days: Media Format: Beef extract 2g/L, Acid Hydrolysate of Casein 17.5g/L, Starch 1.5g/L, Agar 17g/L: For Use With (Application) Antimicrobial disc diffusion susceptibility testing of common rapidly … Starch is added to absorb any toxic metabolites produced. Mueller Hinton Agar has been used: For more information contact us at info@libretexts.org or check out our status page at https://status.libretexts.org. You will need to remove the bottle from the microwave and swirl the contents every 10 seconds to evenly distribute the heat. McFarland used today will be 0.5 = ~\(1.5 \times 10^8\) CFU/mL. Mueller Hinton Agar, for Kirby-Bauer disk susceptibility testing, large 15x150mm plate, order by the package of 10 plates, by Hardy Diagnostics. 3. to CLSI. It was developed in 1941 by Mueller and Hinton. Mueller Hinton E agar is a medium for antimicrobial susceptibility testing by diffusion. SDS; MUELLER-HINTON agar acc. Use a cotton swab to take a small amount of your bacteria from your plate and gently swirl it into your tube of saline until the turbidity matches that of your McFarland Standard. (9) Additionally, this media has been used in standardized antimicrobial disk susceptibility testing, as described by Bauer, Kirby, et al. 9 The agar is inoculated with the test organism either by spread plating across the surface of a pre-poured agar plate, or by incorporation … Mueller-Hinton agar is the most commonly used media for ZOI testing of non-fastidious organisms and was recommended by Bauer, Kirby, et al. Place the bottle in a microwave. Prepared Media Mueller Hinton Agar Petri Plate Format. Suspend 38.0 grams in 1000 ml distilled water. Prepared Media Mueller Hinton Agar Petri Plate Format. Mueller-Hinton Plate (MH Plate): A growth medium that is commonly used for antibiotic susceptibility testing and allows for even diffusion of the antibiotic in the medium. Examine Mueller Hinton II Agar plates after 16Œ18 h. Measure the zone diameters of the complete zones of inhibition to the nearest mm. Mueller and Hinton developed Mueller Hinton Agar in 1941 to be a protein free medium for isolating pathogenic strains of Neisseria. The use of media other than Mueller-Hinton agar may result in erroneous results. This starter culture was used to inoculate a larger culture at an inoculum to culture ratio of 1:500. 7. Email * Catalog Number * CofA. This is done by matching the turbidity (cloudiness) of McFarland standard with that of the test solution. (2) Barry and Fay investigated the effects of altering the depth of plated Mueller Hinton Agar on disk diffusion testing, an… Mueller-Hin Ordering information; Catalog no. 2. 1. DO NOT put them back with the unused saline! Mueller Hinton Agar Plate MP173 Intended Use: Recommended for determination of susceptibility of microorganisms to antimicrobial agents isolated from clinical samples. Note: The performance of this batch has been tested and standardised as per the current CLSI (formerly, NCCLS) document M6-protocols for Evaluating Dehydrated Mueller Hinton Agar. Later, A. L. Barry & G. D. Fay investigated the effects of altering the depth of plated Mueller Hinton Agar medium on disk diffusion testing, and determined a standardized depth of the medium in the plate to be approximately 4 millimeters is sufficient to avoid false results. for each of your antibiotics and record your results below. Compare your results to the chart provided to determine if your bacterial species is resistant or susceptible to the antibiotics we used. Dip your forceps into the ethanol, flame BRIEFLY, and wait for all the ethanol to evaporate. Mueller-Hinton Agar 2. 2. Qty Your Price. 15692) was plated on Mueller Hinton II agar plates and incubated at 37 °C. plate mueller hinton ii agar 20 BD Mueller Hinton Agar is recommended for antimicrobial disc diffusion susceptibility testing of common, rapidly growing bacteria by the Bauer-Kirby method, as standardized by the Clinical and Laboratory Standards Institute (CLSI). Mueller-Hinton Agar was designed to be a reproducible culture medium for the isolation of pathogenic Neisseria species (Mueller and Hinton 1). The LibreTexts libraries are Powered by MindTouch® and are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. Create a full lawn from your liquid standard sample on Mueller-Hinton (MH) plate by dipping a new cotton swab ONCE into your McFarland Standard you have made and then swabbing a single plate 4X in four different directions. Item # 822922. Agar is the solidifying agent. The impregnated disk is placed on an agar surface, resulting in diffusion of the antimicrobial into the surrounding medium. The endpoint should be taken as the area showing no obvious visible growth, excluding faint growth of tiny Mueller Hinton Agar is used to isolate pathogenic species of Neisseria. Mueller Hinton Agar can be used for disk diffusion sensitivity testing of non-fastidious organisms. Working individually you will use a 0.5 McFarland Standard (1.5 x 108 CFU/mL) as a visual standard to make your own liquid standard from the plate provided to you (make sure to mix the standard tube before comparing turbidities). Beef Extract and Acid Hydrolysate of Casein provide nitrogen, vitamins, carbon, amino acids, sulphur and other essential nutrients. Cells were harvested at midlogarithmic growth phase (OD The Kirby-Bauer antimicrobial disk diffusion procedure is used with MH plates. Measure the diameter of zones of inhibition is in mm. A single colony was inoculated in 50 mL of Mueller Hinton broth (MHB) and incubated overnight at 37 °C. Legal. Petri plates. Loosen or remove the cap on the Mueller-Hinton agar bottle. Certificate of Analysis. 3. 5. Composition** Ingredients Gms / Litre HM infusion B from # 300.000 Acicase ## 17.500 Starch 1.500 Agar 17.000 Final pH … Kirby-Bauer disk diffusion susceptibility test protocol, inoculation of the Mueller-Hinton agar plate. Starch hydrolysis yields dextrose, which serves as a source of energy. 2. Use the swab with the test organism to streak a MHA plate or a NA plate for a lawn of growth. ers’’, Scharlau) were laid on plates containing Mueller Hinton agar buffered with 0.15 M sodium phosphate buffer, pH 7.2, and the plates were overlaid with 6 ml of molten agar (1.5% brain heart infusion plus 0.75% agar in phosphate buffer) inoculated with 50 Alofan overnight growth of the indicator bacterial strain to be tested. Discard your saline tubes on the biohazard rack. Mueller Hinton Agar, Prepared Media Plates 150 x 15 mm, Pack 10. f. Incubate plates aerobically at 35 – 2°C within 15 min after the discs are applied. Unless otherwise noted, LibreTexts content is licensed by CC BY-NC-SA 3.0. Have questions or comments? Mueller Hinton Agar Plates, Pkg of 20, 100 x 100 mm #M0029: Download SDS: Mueller Hinton Agar Plates, Pkg of 20, 150 mm #M0028: Download SDS: SDS Request. 1. Therefore it is important to always mix the McFarland standard before beginning. [ "article:topic", "Kirby-Bauer", "showtoc:no", "license:ccbysa", "authorname:npakpour", "McFarland standards", "Mueller-Hinton Plate" ], https://bio.libretexts.org/@app/auth/2/login?returnto=https%3A%2F%2Fbio.libretexts.org%2FBookshelves%2FAncillary_Materials%2FLaboratory_Experiments%2FMicrobiology_Labs%2FBook%253A_General_Microbiology_Lab_Manual_(Pakpour_and_Horgan)%2FLab_06%253A_Antibiotic_Susceptibility_Testing, Assistant Professor (Biological Sciences). After streaking the Mueller-Hinton agar plate as described in Step 3, rim the plate with the swab by running the swab around the edge of the entire the plate to pick up any excessive inoculum that may have been splashed near the edge. The medium has been developed according to EUCAST [European Committee on Antimicrobial Susceptibility Testing] and CLSI ® (Clinical and Laboratory Standards Institute Inc.) recommendations and is Etest validated. Pour cooled Mueller Hinton Agar into sterile Petri dishes on a level, horizontal surface to give uniform depth. (6) It was found that Mueller Hinton Agar was useful in identifying sulfonimide-resistant and responsive strains of gonococci. The antibiotic discs are labeled; no additional labeling for the discs is necessary. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. Effectiveness of the antimicrobial can be shown by measuring the zone of inhibition (ZOI) for a pure culture of an organism. Disk Dispenser, single, metal, 1 each, by BD Biosciences, compatible with HardyDisk™ AST, Mueller Hinton Agar with Blood, 15x100mm plate, order by the package of 10, by Hardy Diagnostics, Mueller Hinton Agar, CRITERION™ Dehydrated Culture Media, Mylar® zip-pouch to make 2L, by Hardy Diagnostics, Mueller Hinton Agar, CRITERION™ Dehydrated Culture Media, 500gm wide-mouth bottle, by Hardy Diagnostics, Mueller Hinton Agar, CRITERION™ Dehydrated Culture Media, 2kg bucket, by Hardy Diagnostics, Mueller Hinton Agar, CRITERION™ Dehydrated Culture Media, 10kg bucket, by Hardy Diagnostics, Mueller Hinton Agar with Chocolate, 15x100mm plate, order by the package of 10, by Hardy Diagnostics, Mueller Hinton Agar, for disk susceptibility testing, 28ml fill, 15x100mm plate, order by the package of 10, by Hardy Diagnostics, MRSA Mueller Hinton Agar (Mueller Hinton Agar with 4% Sodium Chloride and 6mcg/ml of Oxacillin), for Methicillin Resistant, Mueller Hinton Agar with Blood, large 15x150mm plate, order by the package of 10, by Hardy Diagnostics, Mueller Hinton Broth, 10ml, 16x125mm tube, order by the package of 20, by Hardy Diagnostics, McFarland Standard, Latex Equivalent # 0.5, 8ml fill, 16x100mm tube, by Hardy Diagnostics, Mueller Hinton Agar Deep, 20ml, 20x125mm pour tube, order by the package of 20, by Hardy Diagnostics, Mueller Hinton Broth, 3ml, 13x100mm tube, order by the package of 20, by Hardy Diagnostics, Bacitracin 0.04 units, HardyDisks™, for the differentiation of Group A Strep (Streptococcus pyogenes), 50 disks per cartridge, 1 cart., not for antimicrobial sensitivity tests, use with dispenser number 260457, by Hardy Diagnostics, freeze on arrival. 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