Gram stain technique
Welcome to our suite of NUI Galway Microbiology teaching videos. We hope that they will guide you in performing your experiments in a scientific and safe manner. This video describes how to perform the most widely used differential staining technique in microbiology: the Gram stain. Developed by Dr Christian Gram in 1884, it categorises bacteria as Gram positive or Gram negative. In addition, this stain also allows determination of cell morphology, size, and arrangement. It is typically the first differential test performed in bacterial identification.
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Using the compound light microscope
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Gram stain
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Ziehl-Neelsen Acid-Fast Stain
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Serial dilution of bacterial culture
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Gram Stain
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Use of Swinnex filtration for membrane mating (1 of 4)
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Gram Stain Technique
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Four Quadrant Streak procedure - How to properly streak a Petri plate for isolated colonies
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A tour of the Microbiology Lab - Section one
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How to Make Chemically Competent E. coli
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Automatic packaging machines and packaging systems for Kits
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Use of Swinnex filtration for membrane mating (2 of 4)
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Microbiology: Urine Culture Primary Set-Up Inoculation and Colony Count
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Gram Staining
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Gram Stain Procedure
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Staining technique in microbiology: Gram staining
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Identification of bacteria using biochemical tests (2 of 2)
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Gram Stain
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The endospore stain
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