Visibly dyed microspheres are frequently used in lateral flow tests and "latex" agglutination tests. Bangs polystyrene microspheres are impregnated with vibrant dyes for optimal visualization. The colorpalette for a representation of our standard colors. Non-functionalized and functionalized versions are available to support adsorption and covalent binding strategies. Biomolecules may be covalently immobilized to carboxyl-functionalized microspheres. Bangs dyed carboxyl microspheres are impregnated with vibrant dyes for optimal visualization. See our color palette for a representation of our standard colors. Unless noted otherwise, they are supplied as a 5% solids suspension (w/v) and are available in four standard volumes: 0.5g, 1.0g, 1.5g, and 5.0g.: