KOH string test for bacterial characterisation
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 a KOH string test. This test is a valuable adjunct to the Gram stain, and will help to determine if an organism is Gram positive or Gram negative.

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Preparation of a bacterial smear for staining

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Identification of bacteria using biochemical tests (2 of 2)

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How to prepare the perfect Gram stain - Gram staining procedure

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Potassium Hydroxide Test

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Gram stain technique

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Pipetting 201: Mistakes

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Four Quadrant Streak procedure - How to properly streak a Petri plate for isolated colonies

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Identification of bacteria using biochemical tests (1 of 2)

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Bacterial Identification Tests: Catalase Test

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GRAM POSITIVE VS GRAM NEGATIVE BACTERIA

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How to Perform the Oxidase Test

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Lab 5-17: Gelatinase Test

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Gram Staining Procedure Animation Microbiology - Principle, Procedure, Interpretation | USMLE Step 1

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Catalase Test

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Use of BBL Crystal kit to identify bacteria (2 of 3)

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Lab Exercise 3: Heat Fixing and Gram Staining

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Automatic packaging machines and packaging systems for Kits

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Gram's Staining

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Sterile Arbeitstechniken unter der Sterilwerkbank

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