Crystal violet (C.I. 42555) is a CERTISTAIN dry dye that can be used to produce a Crystal violet staining solution to differentiate Gram-positive and Gram-negative bacteria in samples of human origin. ... On the other side Gram-negative bacteria are stained red or pink with the counterstain.
Crystal violet binds to DNA and proteins in cells and as such can be used to detect the maintained adherence of cells
CRYSTAL VIOLET FOR MICROSCOPY used as a tissue stain in the preparation of light microscopy sections. In laboratory, solutions containing crystal violet and formalin are often used to simultaneously fix and stain cells grown in tissue culture to preserve them and make them easily visible, since most cells are colourless
Crystal violet or gentian violet, also known as methyl violet 10B or hexamethyl pararosaniline chloride, is a triarylmethane dye used as a histological stain and in Gram's method of classifying bacteria. Crystal violet has antibacterial, antifungal, and anthelmintic (vermicide) properties and was formerly important as a topical antiseptic.