FSSC 22000 applies to food manufacturers. FSSC22000.com defines the scope:
"It is developed for the certification of food safety systems of food manufacturers that process or manufacture animal products (not including slaughtering and pre-slaughtering), perishable vegetal products, products with a long shelf life and (other) food ingredients like additives, vitamins and bio-cultures."
Requirements for FSSC 22000 are found in two documents, ISO 22000:2005 and the PAS 220. For more information on the certification scheme itself, visit www.fssc22000.com. There you will be able to download documenation with information on the certification scheme.