The gram stain permits the separation of all bacterial species into two large groups, those which retain the primary dye (gram-positive), and those which lose the primary dye and take the color of the secondary dye (gram-negative). The mechanism of gram stain is based on the distinctive chemistry and physical properties of the cell wall, possibly the lipid content. However, the exact mechanism of gram stain is still unknown.
Kit includes: Crystal Violet, Gram's Iodine, Decolorizer, Safranin (8 oz. bottle of each)