Specified limits of acceptability applied to process, service, or product characteristics .
Source: API Spec Q2, Specification for Quality Management System Requirements for Service, Supply Organizations for the Petroleum and Natural Gas Industries, Upstream Segment, First Edition, December 2011. Global Standards
Demonstration through monitoring or measurement that the product complies with specified requirements.
Source: API SPEC Q1, Specification for Quality Management System Requirements for Manufacturing Organizations for the Petroleum and Natural Gas Industry, Ninth Edition, June 2013 (Errata 2, March 2014). Global Standards
Source:ISO/TS 29001:2010(E).Global Standards