Volu-Sol?s Amyloid Stain Kit (Congo Red), Bennhold is a kit used for the detection of amyloid. Under certain pathologies, amyloid, a fiber-like protein can be deposited within tissues. Detection of amyloid by the use of green birefringence is considered the most specific technique. Hydrogen bonds between adjacent amyloid fibers are broken by the use of the sodium hydroxide. This allows for more binding sites for the Congo Red dye. RESULTS: Amyloid - Red to Pink-Red Nuclei ? Blue Elastic Fibers ? Light Red Amyloid ? Polarized Light ? Apple Green