What process is used to scan eggs to ensure they are free from cracks and interior defects?

Candling is the process used to scan eggs for cracks and interior defects. This technique involves holding an egg against a strong light source to illuminate its interior. By doing so, one can observe the condition of the egg, checking for any irregularities such as cracks in the shell or issues with the yolk or the albumen (egg white). This process is essential for ensuring quality control in egg production and safety for consumers.

Grading refers to the classification of eggs based on their quality and size, which occurs after candling. Packing entails the physical placing of eggs into cartons or containers for distribution and sale, and washing is a method used to clean the eggshells prior to packing, which does not involve inspecting their interior. Therefore, the primary function of candling is to provide a thorough examination of the egg to confirm its integrity and quality.