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Methods of Microbiology

Methods of Microbiology

Methods of Microbiology. Staining Media Microscopy. Staining. Increase contrast of microorganisms Classified into types of stains Simple stain: one dye, one step Negative stain Positive stain Differential stain: distinguish one group from another Structural or special stains. Dyes.

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B A C T E R I A L S T A I N I N G

B A C T E R I A L S T A I N I N G

B A C T E R I A L S T A I N I N G. Why we should stain bacteria?. Bacteria have nearly the same refractive index as water, therefore, when they are observed under a microscope they are opaque or nearly invisible to the naked eye.

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Ch 3: Observing Microorganisms Through a Microscope

Ch 3: Observing Microorganisms Through a Microscope

Ch 3: Observing Microorganisms Through a Microscope. Objectives Review the metric units of measurement Define total magnification and resolution Explain how electron and light microscopy differ Differentiate between acidic and basic dyes

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Focusing the microscope simple staining

Focusing the microscope simple staining

Focusing the microscope simple staining. How to Focus the Microscope?. Turn the revolving nosepiece to 10 magnifying lens. Move the stage up, the condenser to the top position and close iris diaphragm half way. Put the slide on the slide holder on the stage.

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237 views • 11 slides
Introduction of Common Artificial Dyes

Introduction of Common Artificial Dyes

This article mainly introduces some common artificial dyes. Visit http://www.alfa-chemistry.com/products/dyes-20.htm for more information.

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60 views • 3 slides

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