Spectrum™ Chitosan, Powder is a polysaccharide made by treating shrimp and other crustacean shells with the alkali sodium hydroxide. It can be used in agriculture as a seed treatment and to fight off fungal infections and is often used in the wine making industry as a chemical to prevent spoilage. In medicine it can be used in bandages to reduce bleeding and as an antibacterial agent. Ungraded products supplied by Spectrum are indicative of a grade suitable for general industrial use or research purposes and typically are not suitable for human consumption or therapeutic use. These materials may or may not have a Certificate of Analysis available.