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1. What is the measurement certification mark CMA? CMA is the abbreviation of China Metrology Accreditation, as shown below: Testing institutions that have obtained the metrology certification certificate in (Year) Quantity Recognition Cantonese ( ) can use this mark on inspection (testing, testing, calibration) certificates and reports according to the items approved and listed on the certificate. 2. What is the nature of metrology certification? Metrology certification is based on the Measurement Law of the People's Republic of China. Article 22 of the law stipulates that “product quality inspection agencies that provide fair data to the society must be approved by the people at or above the provincial level. * * The measurement administrative department shall pass the assessment of its measurement verification and testing capabilities and reliability. ”It is further clarified in Articles 32, 33, 34, 35 and 36 of the "Implementation Rules of the Measurement Law of the People's Republic of China": Metrology certification is a mandatory legal assessment of testing institutions. * * Formal recognition given by an authoritative authority to a testing agency for conducting specified types of testing. Since this kind of assessment is called "Measurement Certification" in the "Implementation Rules of the Measurement Law of the People's Republic of China", the name "Measurement Certification" is still used today. 3. What is the legal effect of metrological certification? According to the regulations on metrological certification management, data issued by testing institutions that have passed metrological certification are used for trade certification, product quality evaluation, and result signing as notarized data and have legal effect. It is illegal for technical institutions without metrological certification to provide notarized data to the society, and any violation will be prosecuted. 4. What is the use of test data and results from metrology certification and qualified testing agencies? The purpose of the existence of testing institutions is to provide accurate and reliable testing data and test results to the society. The data and results issued by testing institutions with qualified metrology certification are mainly used in the following aspects: 1. * * Institutions should formulate and implement various guidelines and policies based on relevant test results. ； 2. The scientific research department uses detection data to discover new phenomena, develop new technologies, and new products. ； 3. Producers use detection data to determine their purchasing and selling activities ； 4. Consumers use test results to protect their own interests ； 5. The circulation field uses detection data to determine its purchasing and selling activities. 5. What is the history of metrology certification and international laboratory accreditation? In 1947 Australia established the world's first * * Laboratory accreditation system and establishment of accreditation body Australia * * Testing Association (NATA). In the 1960s, the United Kingdom also established a laboratory accreditation agency, which led to the establishment of accreditation agencies in various European countries. In the 1970s, the United States, New Zealand, and France also carried out laboratory accreditation activities. In the 1980s, laboratory accreditation developed to Southeast Asia, Singapore, Malaysia, etc. * * A laboratory accreditation body was established. At present, most of the international * * All have implemented laboratory certification and accreditation systems. In the early 1990s, my country promulgated the "Technical Assessment Specifications for Metrology Certification of Product Quality Inspection Institutions" (JJG1021-90) and established the earliest laboratory certification/accreditation system model. because * * The word "certification" is used in metrology laws, and the essence of "measurement certification" is a statutory recognition activity for laboratories. 6. Metrology certification and * * What is the difference between laboratory accreditation? Metrology certification is one of the important work contents of legal metrology management. For testing institutions, it is the mandatory approval system for testing institutions to enter the testing service market, that is,: Only institutions with metrological certification qualifications and legal status of metrological certification can provide testing services to the society. * * Laboratory accreditation is consistent with foreign laboratory accreditation systems and is a voluntary capability accreditation activity. pass * * A laboratory-accredited testing technology institution that proves that it meets the internationally accepted general requirements for calibration and testing laboratory capabilities. 7. How to classify metrology certification? How to organize and implement it? Metrology certification is implemented at two levels. The first level is * * level, consisting of * * Accreditation Certification Supervision and Administration Committee organizes and implements ； The first level is the provincial level, and the provincial quality and technical supervision bureau is responsible for organizing and implementing it. The specific work is undertaken by the Metrology Certification Office (Measurement Office). No matter it is * * The effectiveness of implementation is completely the same whether it is at the provincial level or at the provincial level. * * Regardless of whether the certification is at the provincial level or at the provincial level, the qualifications of the testing institutions that have passed the certification are equally legally valid across the country, and there is no difference in the effectiveness of different handling departments. 8. What evaluation criteria are used for metrology certification? 2001 * * The "Measurement Certification/Inspection and Accreditation Assessment Criteria (Trial)" was promulgated and came into effect on December 1 of the same year, and the original assessment criteria JJG1021-90 was abolished at the same time. The evaluation system currently followed by metrology certification is basically similar to that of foreign countries. Its basic content is consistent with the laboratory accreditation criteria of ISO/IEC Guide 25 (90 edition), and it also supplements the provisions of my country's metrology legal management.