acidic
Basic dyes: Crystal violet, Methylene blue, Malachite green, Safranin. Acidic dyes: Nigrosin, Congo red
Nigrosin is a negatively charged acidic dye that is commonly used in staining techniques in microbiology and histology. It works by binding to positively charged structures in cells, such as nucleic acids, giving them a dark coloration which aids in visualization under a microscope.
Lye is a strong base, which means it is basic, not acidic.
acidic
Coffee is acidic.
Nigrosin
Basic dyes: Crystal violet, Methylene blue, Malachite green, Safranin. Acidic dyes: Nigrosin, Congo red
Nigrosin is an acidic stain composed of large molecules that are repelled by the negatively charged bacterial cell surface. Bacterial cells typically have a negative charge due to components like lipopolysaccharides in their cell walls, which repel the negatively charged nigrosin dye, preventing it from staining the cells.
Nigrosin is a negatively charged acidic dye that is commonly used in staining techniques in microbiology and histology. It works by binding to positively charged structures in cells, such as nucleic acids, giving them a dark coloration which aids in visualization under a microscope.
acidic.
basic or acidic
Acidic
Acidic
its acidic
acidic
Because negative staining requires the use of an acidic stain, which will not penetrate the cells because of the negative charge on the surface of the bacteria. As a result, the unstained cells can be easily identified against the colored background.
Acidic: pH < 7 Basic : pH > 7