Group 1 - The core viewpoint of the article highlights the collaborative efforts of Beijing, Tianjin, and Hebei's market regulatory departments in establishing seven joint measurement technical standards, addressing key areas such as air pollution prevention and water quality monitoring [2] - The newly released measurement technical standards include the pioneering "Calibration Specification for Volatile Organic Compounds Photoionization Online Monitoring Instruments," which introduces humidity interference error indicators and aims to control measurement errors within ±5% of full scale [2] - The article emphasizes the importance of these standards in filling the performance evaluation standard gap for monitoring instruments in China, ensuring accurate and unified measurement values, and guiding manufacturers to enhance product quality for better environmental protection [2] Group 2 - In the field of water environment governance, the "Automatic Water Quality Intelligent Analysis Instrument Calibration Specification" addresses the issue of manufacturers relying on internal testing methods, which lack a unified standard for effective traceability to national benchmarks [3] - The specification establishes scientific measurement performance indicators, ensuring that the error for spectrophotometric instruments does not exceed ±5% and for volumetric instruments does not exceed ±3%, with repeatability not greater than 3%, thereby strengthening the reliability of detection data [3] - The three regions will continue to improve the regional measurement collaboration system, leveraging measurement support for technological innovation and promoting industrial development, thus integrating measurement work into the broader context of coordinated development in the Beijing-Tianjin-Hebei area [3]

Core Insights - The joint release of seven regional measurement technical specifications by the market regulatory authorities of Beijing, Tianjin, and Hebei marks a significant step towards standardization in key areas such as air pollution prevention and water quality monitoring [1][2] - The introduction of the first national calibration standard for VOC online monitoring instruments addresses the long-standing issue of lack of standards in the industry, enhancing data accuracy and reliability [1] - The new calibration standards for water quality analysis instruments unify various technical methods, providing reliable measurement support for surface water management and pollution prevention [1] Group 1: VOC Monitoring - The "Volatile Organic Compounds (VOC) Online Monitoring Instrument Calibration Specification" is the first of its kind in China, introducing a "humidity interference error" indicator to control measurement errors within ±5% FS and reduce repeatability to 2% [1] - This standard fills a gap in performance evaluation standards in the VOC monitoring field, providing stable and credible data support for joint air pollution prevention and control in the Beijing-Tianjin-Hebei region [1] Group 2: Water Quality Monitoring - The "Automatic Water Quality Intelligent Analyzer Calibration Specification" standardizes various technical types of instruments, ensuring that the measurement error for spectrophotometric instruments does not exceed ±5% and for volumetric instruments does not exceed ±3% [1] - This unification addresses previous inconsistencies in internal methods among manufacturers, facilitating reliable measurement for surface water management and pollution prevention decision-making [1] Group 3: Gas Meter Calibration - The "Gas Meter Calibration Device Calibration Specification" introduces a "modular overall calibration" model, ensuring accurate measurement values by testing core parameters such as measurement error, pressure loss, and sealing on a single platform [2] - This innovation promotes standardization in gas meter calibration, safeguarding fairness and safety in public measurement [2] Group 4: Collaborative Framework - Since the establishment of the measurement specification co-construction mechanism in 2017, the Beijing-Tianjin-Hebei region has released a total of 43 co-constructed measurement specifications and achieved intercommunication of 413 technical specifications [2] - The three regions have developed a comprehensive collaborative system through a "stock sharing, incremental co-construction" mechanism, forming a "Beijing-Tianjin-Hebei model" for cross-regional measurement cooperation [2]