The standards of ISO 9000 detail 20 requirements for an organization's quality management system in the following areas: Management Responsibility, Quality System, Order Entry, Design Control, Document and Data Control, Purchasing, Control of Customer Supplied Products, Product Identification and Tractability, Process Control, Inspection and Testing Control of Inspection, Measuring, and Test Equipment, Inspection and Test Status, Control of Nonconforming Products, Corrective and Preventive Action, Handling, Storage, Packaging, and Delivery, Control of Quality Records, Internal Quality Audits,