Steps In Gram Staining

Steps in gram staining

Steps in Gram Staining
Step 1: Crystal Violet
Step 2: Iodine Treatment
Step 3: Alcohol Wash
Step 4: Safranin Counterstain
Stains cell wall purple
Binds to crystal violet and forms a complex
Decolorizes cells
Stains decolorized cells pink
All bacteria
All bacteria
Gram-positive bacteria retain color
Gram-negative bacteria lose color
Gram-negative bacteria