McFarland standards
Der Begriff McFarland standards ist im englisch-sprachigen Wikipedia aufgeführt. Dort heißt es dazu:

In microbiology, McFarland standards are used as a reference to adjust the turbidity of bacterial suspensions so that the number of bacteria will be within a given range to standardize microbial testing. An example of such testing is antibiotic susceptibility testing by measurement of minimum inhibitory concentration which is routinely used in medical microbiology and research. If a suspension used is too heavy or too dilute, an erroneous result (either falsely resistant or falsely susceptible) for any given anti microbial agent could occur.
Original McFarland standards were mixing specified amounts of barium chloride and sulfuric acid together. Mixing the two compounds forms a barium sulfate precipitate, which causes turbidity in the solution. A 0.5 McFarland standard is prepared by mixing 0.05 mL of 1.175% barium chloride dihydrate (BaCl2•2H2O), with 9.95 mL of 1% sulfuric acid (H2SO4).
Now there are McFarland standards prepared from suspensions of latex particles, which lengthens the shelf life and stability of the suspensions. The standard can be compared visually to a suspension of bacteria in sterile saline or nutrient broth. If the bacterial suspension is too turbid, it can be diluted with more diluent. If the suspension is not turbid enough, more bacteria can be added.
McFarland Nephelometer Standards[citation needed]:
*at wavelength of 600 nm


Dies ist ein Auszug aus dem Artikel McFarland standards der freien Enzyklopädie Wikipedia. In der Wikipedia ist eine Liste der Autoren verfügbar.
Auf de.wikipedia.org wurde der Artikel McFarland standards in den letzten 30 Tagen 4.785-mal aufgerufen. (Stand: 11.04.2015)
Bilder zu McFarland standards
Vorschaubild:
Original:
Suchergebnisse bei Google und Bing
1
1
1
McFarland standards - Wikipedia, the free encyclopedia
In microbiology, McFarland standards are used as a reference to adjust the turbidity of bacterial suspensions so that the number of bacteria will be within a given ...
en.wikipedia.org/wiki/McFarland_standards
6
3
2
Preparing McFarland Turbidity Standards…
There are various ways of estimating the population of microbes in suspension cultures. One of the easiest method is through visual comparison with a stable and known ...
thelittlesunspot.hubpages.com/hub/Preparing-McFarland-Turbidity-Standards
7
9
3
McFarland Turbidity Standards - Northeast Laboratory Services
McFarland Turbidity Standards. Page 1 of 2. P.O. Box 788. Waterville, Maine 04903-0788. 227 China Road. Winslow, Maine 04901. TECHNICAL PRODUCT ...
nelabservices.com/techsheets/McFarland_Turbidity_Standards.pdf
2
>30
4
BBL Gebrauchsfertiger Trübungsstandard - BD
McFarland-Standards werden als Trübungsstandards zur Vorbereitung von ... Der McFarland-Standard 0,5 wird speziell bei der Herstellung von.
www.bd.com/leaving/?/europe/regulatory/Assets/IFU/US/8808421(0205)_de.pdf
3
>30
5
http://www.mta-labor.info : Mc-Farland-Standard - laborwissen.de
20. Febr. 2008 ... Der McFarland-Standard (eine Bariumsulfat-Trübung) dient der Einstellung der Keimdichte (KBE/ml) einer Bakteriensuspension.
laborwissen.de/wiki/tiki-index.php?page_id=348
4
>30
6
MCFARLAND STANDARDS - Pro-Lab Diagnostics
INTENDED USE. The McFarland Equivalence Standards are intended to be part of a quality control program for adjusting densities of bacterial suspensions that ...
www.pro-lab.com/inserts/McFarland.pdf
5
>30
7
5.14.1 McFarland Standards - ASM Press
sion with the turbidity of a McFarland standard. McFarland standards are pre- pared by adding barium chloride to sul- furic acid to obtain a barium sulfate pre-.
www.asmpress.org/index.asp?downloadid=262
8
>30
8
Measurement of Cell Concentration in Suspension by Optical Density
McFarland standards can be used to visually approximate the concentration of cells in a suspension. The McFarland Scale represents specific concentrations of  ...
www.microbiol.org/resources/monographswhite-papers/measurement-of-cell-concentration-in-suspension-by-optical-density/
9
>30
9
Evaluation of the Inoculation Procedure Using a 0.25 McFarland ...
Evaluation of the Inoculation Procedure Using a 0.25 McFarland Standard for the BD Phoenix Automated Microbiology System [down-pointing small open ...
www.ncbi.nlm.nih.gov/pmc/articles/PMC2168575/
10
>30
10
Is it correct to use MCFarland Standard? - ResearchGate
2 Jul 2013 ... I did an experiment using a certain turbidity value (bacteria + medium), in fact another lab send it so to be used, anyway, they did not count the ...
www.researchgate.net/post/Is_it_correct_to_use_MCFarland_Standard
Suchergebnisse für "McFarland standards"
Google: ca. 3.400.000
McFarland standards in der Wissenschaft
[PDF]Prof. Dr. Heinrich K. Geiss Sektion Infektiologie ... - INSTAND eV
Hygiene-Institut. Universität Heidelberg ... Nephelometer mit dem 0,5-McFarland-Standard verglichen ... McFarland standard (usually 2 – 6 hours).
[PDF]Download - ag-sahl - Universität Bonn
Universität Bonn. Einführung in die ... http://www.ag-sahl.uni-bonn.de. Institut für ...... Eine nach dem McFarland-Standard 0,5 eingestellte Suspension enthält ca.
Mary Mcfarland profiles | LinkedIn
View the profiles of professionals named Mary Mcfarland on LinkedIn. ... Title: Coordinator for West Virginia Uncovered at West Virginia University; Demographic ...
[PDF]Inaugural-Dissertation - FreiDok - Albert-Ludwigs-Universität Freiburg
Standards wird eine Vergleichbarkeit zwischen den Medikamenten erreicht ( Augustin, 2004 a; ...... Dies entspricht dem McFarland Standard Stufe 0,5-1.
[PDF]Wirksamkeit antimikrobieller Wirkstoffe bei Arcanobacterium pyogenes
Ludwig-Maximilians-Universität München log2. Binär logarithmisch. lPb. Lysiertes Pferdeblut. McF. McFarland-Standard mg. Milligramm. Mg2+. Magnesium.
Dr Bobby McFarland - Newcastle University
Dr Bobby McFarland DoH/HEFCE Clinical Senior Lecturer and Consultant Paediatric Neurologist. Email: robert.mcfarland@ncl.ac.uk; Telephone: +44 (0) 191 ...
[PDF]EUCAST Blättchendiffusionstest zur antimikrobiellen ...
CETC. Stammsammlung der Universität von Göteborg http://www.ccug.se .... mit einer Trübung von 0.5 nach McFarland Standard (Tabelle 2) verglichen werden.
[PDF]Dateien anzeigen
Allergologie am Universitätsklinikum der Friedrich-Schiller-Universität Jena .... McFarland-Standard: Verdünnungsstufe wobei 0,5 McFarland Standard einer ...
McFarland standards - Library
1 Jan 2010 ... McFarland standards (left to right) 0.5, 1.0, 2.0, 3.0, positioned in front ... (Jan Hudzicki, University of Kansas Medical Center, Kansas City, KS) ...
Jon McFarland at William Jessup University - RateMyProfessors.com
Ratings and reviews for Professor Jon McFarland from William Jessup University Rocklin, CA.
Bücher zum Begriff McFarland standards
Antimicrobial Susceptibility Testing Protocols
Antimicrobial Susceptibility Testing Protocols
Richard Schwalbe, Lynn Steele-Moore, Avery C. Goodwin, 2007
0.5 McFarland standard. 1) Procedure for making McFarland standards [10]. a) Combine the appropriate amount of BaCl2 and H2SO4. • For the 0.5 McFarland standard, use 0.5 mL of 0.048 mol/L BaCl2 (1.175% w/v BaCl2⋅2H2O) and 99.5  ...
Klinische Mikrobiologie für den Urologen: Ein Leitfaden Für Das Praxislabor (German Edition)
Klinische Mikrobiologie für den Urologen: Ein Leitfaden Für Das Praxislabor (German Edition)
Holger Blenk von Springer, 2013
Das praktische Arbeiten im Labor-Alltag steht im Vordergrund dieser handlichen Anleitung. Sie liefert das Werkzeug zum Verständnis und zur Durchführung der mikrobiologischen Untersuchungsmethoden und Nachweisverfahren in der Urologie.Das Buch ist systematisch und übersichtlich aufgebaut, die Sprache ist klar und verständlich. Der Text wird durch in...
Antibiotics in Laboratory Medicine
Antibiotics in Laboratory Medicine
Victor Lorian, 2005
TABLE 2.4 (Continued) Features of the Different International Agar Dilution Standards by Bacterial Group or Species ... colony suspension to reach a 0.5 McFarland standard in Brucella or Schaedler broth; for slow-growing strains (>72 h), use ...
Laboratory Diagnosis of Infectious Diseases: Essentials of ...
Laboratory Diagnosis of Infectious Diseases: Essentials of ...
Paul G. Engelkirk, Janet L. Duben-Engelkirk, 2008
The turbidity of the suspension is then adjusted (either by adding more of the organism or by adding more liquid) until it matches the turbidity of a 0.5 McFarland standard. TABLE 7 - 7 Inoculation of the M-H agar plate is accomplished as ...
Mikrobiologische Diagnostik: Bakteriologie - Mykologie - ...
Mikrobiologische Diagnostik: Bakteriologie - Mykologie - ...
Birgid Neumeister, Heinrich K. Geiss, Rüdiger Braun, 2009
Ablaufschema/Verfahren Herstellung eines McFarland-Standards 0,5: 0,5 ml 0,048 M BaCl2 (1,17% w/v BaCl2-2H20) werden mit 99,5 ml einer 0,18 M H2SO4 -Lösung (1% \//\/) gemischt. Die optische Dichte muss bei einer Wellenlänge von  ...
Show Me the Money!: The Standard Catalog of Motion Picture, Television, Stage and Advertising Prop Money
Show Me the Money!: The Standard Catalog of Motion Picture, Television, Stage and Advertising Prop Money
Fred L. Reed von Mcfarland & Co Inc, 2005
Movie Money is often one of the key factors in cinema plots. Characters on screen fight for it, lie for it, marry for it, steal it, counterfeit it, bet with it, burn it - just as many of us do in real life. But movie money, like its counterpart in the real world, is more than dollar signs and electronic blips on bank accounts. The "green stuff...
Mikrobiologische Charakterisierung von Tonrohstoffen unter ...
Mikrobiologische Charakterisierung von Tonrohstoffen unter ...
Ren‚ Kaden, 2011
Tabelle 2.1: Übersicht der McFarland standards und Zuordnung der KbE, der theoretischen optischen Dichte einer Escherichia coli Suspension und der Konzentration BaSO4, welche die Trübung bedingt Tonschlicker wurden zu jeweils 150 ...
Word Parts Dictionary: Standard and Reverse Listings of Prefixes, Suffixes, Roots and Combining Forms
Word Parts Dictionary: Standard and Reverse Listings of Prefixes, Suffixes, Roots and Combining Forms
Michael J. Sheehan von Mcfarland & Co Inc, 2008
Anyone who has scoured a regular dictionary or thesaurus in search of an elusive word expressing a specific meaning will appreciate this versatile reference.This dictionary, split into three parts, presents the prefixes, suffixes, combining forms and roots that fit together to form words in English. Part I, an alphabetical listing of word parts wit...
Reklame
Entwicklung der Google-Suchanfragen


Blog-Einträge zum Begriff
McFarland standards
McFarland standards - Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/McFarland_standards
Ed's Beer Site: McFarland's standard is turbid*
I've now finished Ben McFarland's The World's Best Beers. It's really opened my eyes to how much my international beer knowledge was behind the times.
edsbeer.blogspot.com/2009/12/mcfarlands-standard-is-turbid.html
Artemis Art: What is the McFarland standard?
While I was talking away about FYP with my sister, she mentioned that she was trying to do antimicrobial susceptibility test, on which she used a standard McFarland to measure the inoculum turbidity. Previously I thought inoculum for antimicrobial tests are standardized by CFU count.
artemisart.blogspot.com/2012/02/what-is-mcfarland-standard.html
What's the importance of using the McFarland standard?
- What's the importance of using the McFarland Standard? - What are the different variables that can alter the size of the zone of inhibition around the antibiotic disk (6mm in diameter)? - What...
answers.yahoo.com/question/index?qid=20130818045218AASwT6A
Watashino Sekaii: FYP in My Style : McFarland Standard
Okay since I already done this quite for a long time so I think it is okay for me to write something about McFarland standard. Almost all of my friends whom doing antimicrobial test will do McFarland Standard before proceeding. What is actually McFarland standard? Based on keyscientific, McFarland standards are used to perform visual or spectrophotometric comparisons of bacterial densities in water, saline or liquid growth medium. But for me..in my own version of course, McFarland is to determine the number of bacteria will be standardized for the whole plates.
nasrin-sama.blogspot.com/2012/02/fyp-in-my-style-mcfarland-standard.html
What is the importance of McFarland standard
wiki.answers.com/Q/What_is_the_importance_of_McFarland_standard
McFarland turbidity standard: Definition from Answers.com
McFarland turbidity standard Stock solutions of barium sulfate with consistent turbidity used to compare suspensions of
www.answers.com/topic/mcfarland-turbidity-standard
Preparing McFarland Turbidity Standards
thelittlesunspot.hubpages.com/hub/Preparing-McFarland-Turbidity-Standards
BBL Gebrauchsfertiger Trübungsstandard - BD
www.bd.com/leaving/?/europe/regulatory/Assets/IFU/US/8808421(0205)_de.pdf
Using digital photography to implement the McFarland method
rsif.royalsocietypublishing.org/content/early/2012/02/13/rsif.2011.0809.full
123