// ROBOTICS AND SMART FACTORIES TERM
Part Per Million
A unit of measurement indicating a very small concentration or proportion, often used to express defect rates.
TECHNICAL DEFINITION
Parts Per Million (PPM) is a dimensionless unit expressing a very low concentration or proportion, commonly used in quality control to quantify defect rates or contamination levels, representing the number of defective items per one million units produced.
BACKGROUND
The automotive industry comprises a wide range of companies and organisations involved in the design, development, manufacturing, marketing, selling, repairing, and modification of motor vehicles. It is one of the world's largest industries by revenue with global automotive market at ~$2.75 trillion in 2025.
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- PPM
- Defect rate
- Failure rate
- Concentration unit
USAGE NOTE
A PPM defect rate helps quantify quality performance for high-volume production.
DEVELOPERS
Organizations developing technology related to Part Per Million.
Develops a wide range of metrology and quality control solutions, including coordinate measuring machines (CMMs), laser trackers, and quality data management software like Q-DAS. These tools are essential for measuring part conformity with high precision and performing statistical process control (SPC) to reduce defect rates to the single-digit PPM level.
A leading provider of machine vision systems, software, and sensors used in automated manufacturing. Their AI-powered vision systems perform high-speed inspection, guidance, and identification on production lines to detect and eliminate defective parts in real-time, directly contributing to lowering PPM counts.
A global leader in high-precision industrial metrology. ZEISS produces CMMs, optical and multi-sensor systems, and microscopy solutions that enable manufacturers to verify part dimensions and surface quality against specifications with extreme accuracy, a critical capability for achieving and validating ultra-low PPM quality standards.
Specializes in the development and manufacturing of factory automation solutions, including high-precision sensors, vision systems, and measurement instruments. Their products are integrated into production lines for in-line inspection and process control, identifying deviations instantly to prevent the production of faulty parts and maintain low PPM rates.
Offers the Opcenter Quality software suite, a Quality Management System (QMS) that helps manufacturers monitor and control quality across the entire production process. It facilitates real-time data collection, SPC, and closed-loop quality control to systematically identify and eliminate the root causes of defects, driving down PPM.
A company focused exclusively on Statistical Process Control (SPC) and quality intelligence software. Their platforms provide manufacturers with real-time analytics to monitor process stability, reduce variation, and predict quality issues before they occur, which is the core methodology for achieving Six Sigma quality levels and minimal PPM.
Provides industrial automation and information solutions that improve manufacturing consistency. Their platforms, including MES (Manufacturing Execution Systems) like Plex, integrate quality management directly into the production process, enforcing checks and analyzing performance data to reduce process variability and lower defect rates (PPM).