1887

Chapter 5.20 : P R M R U A S T

MyBook is a cheap paperback edition of the original book and will be sold at uniform, low price.

Abstract:

McFarland turbidity standards are used to standardize the approximate number of bacteria in a liquid suspension by visually comparing the turbidity of a test suspension with the turbidity of a McFarland standard. McFarland standards are prepared by adding barium chloride to sulfuric acid to obtain a barium sulfate precipitate. By adjusting the volumes of these two reagents, standards of varying degrees of turbidity can be prepared to represent several different concentrations of bacteria. The standard most commonly used in the clinical microbiology laboratory for routine antimicrobial susceptibility tests ( ) is 0.5, which represents 1.5 × 10 (generally, range is 1.0 × 10 to 2.0 × 10) bacteria/ml. McFarland standards are commercially available from several sources. As an alternative to the traditional barium sulfate standards, McFarland standards prepared from latex particles have recently become commercially available. This procedure is based on material presented in the previous edition of this manual ( ).

Citation: Leber A. 2016. P R M R U A S T, p 5.20.1.1-5.20.3.10. In Clinical Microbiology Procedures Handbook, Fourth Edition. ASM Press, Washington, DC. doi: 10.1128/9781555818814.ch5.20
Highlighted Text: Show | Hide
Loading full text...

Full text loading...

References

/content/book/10.1128/9781555818814.chap5.20

Tables

Generic image for table
Untitled

Citation: Leber A. 2016. P R M R U A S T, p 5.20.1.1-5.20.3.10. In Clinical Microbiology Procedures Handbook, Fourth Edition. ASM Press, Washington, DC. doi: 10.1128/9781555818814.ch5.20
Generic image for table
Untitled

Citation: Leber A. 2016. P R M R U A S T, p 5.20.1.1-5.20.3.10. In Clinical Microbiology Procedures Handbook, Fourth Edition. ASM Press, Washington, DC. doi: 10.1128/9781555818814.ch5.20
Generic image for table
Untitled

Citation: Leber A. 2016. P R M R U A S T, p 5.20.1.1-5.20.3.10. In Clinical Microbiology Procedures Handbook, Fourth Edition. ASM Press, Washington, DC. doi: 10.1128/9781555818814.ch5.20
Generic image for table
Untitled

Citation: Leber A. 2016. P R M R U A S T, p 5.20.1.1-5.20.3.10. In Clinical Microbiology Procedures Handbook, Fourth Edition. ASM Press, Washington, DC. doi: 10.1128/9781555818814.ch5.20
Generic image for table
Untitled

Citation: Leber A. 2016. P R M R U A S T, p 5.20.1.1-5.20.3.10. In Clinical Microbiology Procedures Handbook, Fourth Edition. ASM Press, Washington, DC. doi: 10.1128/9781555818814.ch5.20
Generic image for table
Untitled

Citation: Leber A. 2016. P R M R U A S T, p 5.20.1.1-5.20.3.10. In Clinical Microbiology Procedures Handbook, Fourth Edition. ASM Press, Washington, DC. doi: 10.1128/9781555818814.ch5.20
Generic image for table
Antimicrobial Stock Solution QC

Antimicrobial Stock Solution QC

Citation: Leber A. 2016. P R M R U A S T, p 5.20.1.1-5.20.3.10. In Clinical Microbiology Procedures Handbook, Fourth Edition. ASM Press, Washington, DC. doi: 10.1128/9781555818814.ch5.20
Generic image for table
Notes and QC parameters for mediaa

Notes and QC parameters for media

Citation: Leber A. 2016. P R M R U A S T, p 5.20.1.1-5.20.3.10. In Clinical Microbiology Procedures Handbook, Fourth Edition. ASM Press, Washington, DC. doi: 10.1128/9781555818814.ch5.20

This is a required field
Please enter a valid email address
Please check the format of the address you have entered.
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error