Analysis of Similarities and Differences of Measurement Uncertainty Evaluation in Metrological Standard Assessment and L
2026-10-26
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The evaluation of measurement uncertainty shares strong commonalities as well as essential differences when applied to the establishment of measurement standards and laboratory accreditation. Their commonalities lie in that the evaluation methods, analysis of uncertainty sources, evaluation procedures and other aspects comply with the same technical specifications. The differences are mainly reflected in connotation definition, evaluation purposes, evaluation objects, result application and so on. Correctly understanding and grasping these similarities and differences helps metrology technicians master the methods for uncertainty evaluation, improve work efficiency, ensure the scientificity and reliability of evaluation results, and provide strong support for the high-quality development of China’s metrology technology system.
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Key Issues and Countermeasures in the Implementation of the New Regulations for Electronic Price Computing Scales
2026-10-24
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The two new regulations, JJF 2784-2025 and JJG 1204-2025, establish an institutional framework for anti-tampering of electronic price computing scales from three dimensions: hardware protection, identity traceability and data early warning. Although this technical system is well-designed, there remains a critical link of on-site implementation between the regulatory provisions and practical governance outcomes.
The phased withdrawal of existing weighing instruments, the transition of grassroots verification capacity from old to new standards, and the in-depth application of smart platforms are interrelated and indispensable. If old scales cannot be phased out in an orderly manner, the market promotion of new scales will be hindered. If grassroots verification fails to cover anti-tampering functions, the technical advantages of the new regulations cannot be realized. If the platform cannot be fully utilized, the whole-chain traceability will only exist on paper. Lagging in any single link will impair the operational performance of the entire supervision system.
Pilot practices in Chongqing, Zhejiang, Enshi and other regions demonstrate that proactive local exploration can effectively shorten the implementation cycle of the policies. With further advancement of regulation enforcement and continuous iteration of platform functions, under the dual constraints of payment specifications and technical measures, the problem of "ghost scales" for electronic price computing scales is expected to be substantially curbed during the 15th Five-Year Plan period.
It should also be noted that the analysis in this paper is mainly based on public information at the early stage of regulation release and pilot practices in selected regions. Following the full rollout of the new regulations, further in-depth research can be carried out in the following directions: first, the evolving trend of tampering acts on electronic price computing scales and the evaluation of prevention and control effectiveness after implementation; second, data mining and analysis of verification records and abnormal incident data accumulated by the smart supervision platform; third, long-term tracking and effectiveness evaluation of capacity building for grassroots verification institutions.
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Discussion on Content Optimization of JJG 1204-2025 Verification Regulation for Electronic Price Computing Scales (Trial
2026-10-22
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Electronic price computing scales are widely used in trade settlement scenarios such as farmers’ markets, shopping malls, supermarkets and mobile vendors. They are closely related to people’s daily life and rank among the most widely used electronic weighing instruments in China. In recent years, cheating on electronic price computing scales and short-weight problems have occurred repeatedly. Such issues seriously infringe upon the legitimate rights and interests of consumers and undermine the order of fair market competition.
On January 8, 2025, the State Administration for Market Regulation issued JJG 1204-2025 Verification Regulation for Electronic Price Computing Scales (Trial). It is a dedicated technical specification specially formulated for electronic price computing scales. Based on the formulation background of this regulation, this paper systematically elaborates on its optimized contents from two aspects: general technical requirements and verification methods.
View More
Discussion on Content Optimization of JJG 1204-2025 Verification Regulation for Electronic Price Computing Scales (Trial
2026-10-22
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Electronic price computing scales are widely used in trade settlement scenarios such as farmers’ markets, shopping malls, supermarkets and mobile vendors. They are closely related to people’s daily life and rank among the most widely used electronic weighing instruments in China. In recent years, cheating on electronic price computing scales and short-weight problems have occurred repeatedly. Such issues seriously infringe upon the legitimate rights and interests of consumers and undermine the order of fair market competition.
On January 8, 2025, the State Administration for Market Regulation issued JJG 1204-2025 Verification Regulation for Electronic Price Computing Scales (Trial). It is a dedicated technical specification specially formulated for electronic price computing scales. Based on the formulation background of this regulation, this paper systematically elaborates on its optimized contents from two aspects: general technical requirements and verification methods.
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Specification for Test of Cheating Feature Identification of Electronic Price Computing Scales Officially Released
2026-10-19
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Recently, the State Administration for Market Regulation has issued the first national metrological test technical specification in the field of cheating feature identification, Specification for Test of Cheating Feature Identification of Electronic Price Computing Scales (hereinafter referred to as the Specification), which shall come into force on January 1, 2027.
As widely used weighing instruments, electronic price computing scales are prevalent in farmers’ markets, supermarkets, mobile stalls and other scenarios. Up to now, there are 4.33 million electronic price computing scales nationwide. The metrological accuracy of electronic price computing scales serves as the foundation and core for fair and precise weighing and pricing, directly bearing on the public’s "vegetable baskets" and "purses".
The Specification incorporates systematic testing for cheating feature identification into the national metrological technical specification system, offering solid technical support for cheating behavior screening and metrological supervision and law enforcement. It features three major highlights:
It innovatively adopts a negative list judgment model. From the two dimensions of weighing and price calculation, the Specification carries out identification tests and comprehensive assessment on cheating features (deceptive usage characteristics) of electronic price computing scales, clearly defining rigid benchmarks for supervision and law enforcement included in the negative issue list.
It covers common forms of cheating. The Specification classifies cheating of electronic price computing scales into two categories: software tampering and hardware modification. Combined with practical experience in metrological verification, while focusing on inspecting the weighing issue of "giving short weight", it also prioritizes the test of abnormal price calculation. It basically covers various common cheating methods in the market, further tightening the supervision network for people’s livelihood metrology.
It specifies and clarifies the complete practical test procedures. The Specification clarifies the whole process of cheating feature detection and testing. Cheating behaviors are identified by trying various possible key combination adjustments and simulating external remote control devices. Together with weight loading and price verification, it checks whether the weighing and price indication values are accurate. It identifies cheating features of electronic price computing scales across the whole chain, all links and all elements, consolidating the technical foundation for people’s livelihood metrological supervision.
Moving forward, the State Administration for Market Regulation will continue to deepen comprehensive governance in the field of people’s livelihood metrology. It will safeguard the public’s "vegetable baskets" and "purses" through targeted and efficient metrological supervision, so that residents can shop and weigh goods with full confidence.
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