This product is solely of clean, California Walnut Meats, which meet United States Department of Agriculture Standards. Product complies with Current Good Manufacturing Practices (FDA Regulation 21 CFR 110) as well as the provisions of Federal Food, Drug and Cosmetic Act and its amendments. All products are inspected and gradedby Grower Direct’s Quality Department at time of packing to confirm products meetthis specification. In addition to internal grading, all products are certified at time of pack to United States Department of Agriculture Standards by the DFA of California. Colour: Light and light amber - a minimum of 60% light, with a maximum of 2% amber, of which not more than 0.5% darker than amber. Size: Minimum 85% riding 24/64 inch round hole screen.