Gram Staining

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Transcript of Gram Staining

  • Microbiology laboratoric test

  • Gram StainMaterialsolutions of crystal violet, Grams iodine (2 g potassium iodide in 300 ml distilled water plus 1 g iodine crystals), 95% ethanol and/orisopropanol-acetone mixture (3:1 v/v), andsafraninBismark brown stain (for color-blind students)clean glass slidesinoculating loopBunsen burnerbibulous papermicroscopelens paper and lens cleanerimmersion oilHyphomonas (Hyphomicrobium) neptunium (ATCC 15444) grown in marine broth (Difco)slide warmerstaining rackBacto Gram Stain Reagents from Difco for the three-step Gram stain

  • Gram Stain

  • Gram Stain

  • Gram Stain

  • Gram Stain

  • Gram Stain

  • Gram Stain

  • Gram Stain

  • Gram Stain

  • Gram Stain

  • Gram StainExamination the preparation under microscope ( x100) for confirmation

  • Microscopic result for Gram Stain

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