Many assays have integrated, built-in, or internal controls to demonstrate their operability at specific procedural steps. What role do these built-in controls play in quality control to assure ...

Test your knowledge of the Hierarchy of Controls by dragging the controls into the correct order. Tell us in the comments how you did. Learn more about the hierarchy in the October 2022 issue of ...

Quality control (QC) on an oil rig is the disciplined prevention and early detection of defects in materials, equipment, data, and execution to protect well control, well integrity, people, and ...