Single, prepared microscope slide with Gram-negative Bacillus smear. Wholemount. Some Bacillus do not retain the Crystal Violet stain used in the Gram staining process. Due to the carbolfuchsin stain, the Gram-negative bacteria appear fuchsia-colored. Slide measures 75mm (3") wide, 25mm (1") long, and 0.06" in height. Slides are expertly prepared and labeled for easy identification. All materials in Eisco Labs slides are completely inert and sealed in glass.