What does CNAs certification mean? The difference between CNAs certification and CMA certification

Date：2022-03-23 16:21:12Views：1697

There are many kinds of laboratory certification, such as CMA, CNAs, GMP, QS, etc. the first thing to consider is which kind of certification. Generally, the laboratory has been certified by CMA and CNAs, and the purification workshop has been certified by GMP and QS. The quality inspection report of products must be stamped with CNAs and CMA chapters, which requires that many laboratories in relevant industries must pass CNAs (laboratory accreditation) and CMA (qualification accreditation). CMA metrological certification and CNAs laboratory accreditation are commonly used as certification of test reports. There are both similarities and differences between them.

What does CNAs certification mean? Meaning: it is a national accreditation institution approved and authorized by the national certification and Accreditation Administration, which is responsible for the accreditation of certification institutions, laboratories, inspection institutions and other relevant institutions. It is merged and reorganized on the basis of the former China certification body National Accreditation Committee (CNAB) and China National Accreditation Committee for laboratories (CNAL).

CMA is the abbreviation of China Metrology Accreditation. Only the third-party testing organization that has obtained the measurement certification certificate is allowed to use the CMA seal on the inspection report, and the CMA mark can be used on the testing certificate and report according to the items approved and listed on the certificate. The inspection report with CMA seal can be used for product quality evaluation, achievement and judicial appraisal, and has legal effect.

1、 The difference between CNAs certification and CMA certification

1. Nature

CMA is a mandatory administrative recognition by the government. According to the Metrology Law of the people's Republic of China, in order to ensure the accuracy and impartiality of test data, all quality testing institutions that issue notarial test reports to the society must obtain the qualification of "metrology certification", otherwise it will constitute an illegal act.

CNAs accreditation is voluntary.

2. Legal basis

The legal basis for CMA measurement certification is Article 22 of the measurement Law of the people's Republic of China, and the legal basis for CNAs laboratory accreditation is GB / T 27025-2008 (equivalent to ISO / IEC17025:2005).

3. Applicable object

CMA is mainly applicable to third-party testing institutions.

CNAs is applicable to all organizations engaged in laboratory activities, including those laboratories that take testing or calibration as part of inspection and product certification.

4. Scope of application

CMA is valid in China and issues notarial test reports to the society,

CNAs is recognized internationally.

5. Review basis

The review basis of CMA measurement certification is the review criteria for laboratory qualification (modified by ISO / IEC17025:2005), review supplementary requirements, application standards, etc.

The evaluation basis of CNAs laboratory accreditation is CNAs / cl01:2006 criteria for accreditation of testing and calibration laboratories (equivalent to ISO / IEC17025:2005).

6. Management and review organization

CMA is reviewed and managed by CNCA (China National Certification and Accreditation Administration), the quality and technical supervision departments of the people's governments of all provinces, cities, autonomous regions and municipalities directly under the central government and the national CMA measurement certification industry review team.

CNAs is reviewed and managed by China conformity assessment and Accreditation Commission.

7. Review procedures and requirements

The review procedures and requirements of CMA are different in different regions, and the local bureau of quality and technical supervision needs to be consulted for specific conditions. The evaluation and requirements of CNAs are unified nationally and internationally.

8. Application scope and characteristics

CMA measurement certification can provide fair data within the scope of passing the certification. It is commonly used in China. CNAs laboratory accreditation is an international common practice. CNAs has signed a mutual recognition agreement with the Asia Pacific Laboratory Accreditation and international laboratory accreditation organization, but it can not replace the review, accreditation and qualification.

2、 Management requirements and technical elements of CNAs certification and CMA certification

CNAs accreditation and CMA accreditation have the same purpose, basically the same assessment content, and both belong to the field of conformity assessment.

CNAs has 25 elements:

Management elements: organization, management system, document control, requirements, bid and contract review, subcontracting of testing and calibration, procurement of services and supplies, customer service, complaints, control of non-conforming testing and / or calibration, improvement, corrective measures, preventive measures, record control, internal audit and management review

Technical elements: General principles, personnel, facilities and environmental conditions, detection and calibration methods and their confirmation, equipment, measurement traceability, sampling, disposal of detection and calibration articles, quality assurance of detection and calibration results, and result report

There are 19 elements in CMA:

Management requirements: organization, management system, document control, testing and / or calibration subcontracting, procurement of services and supplies, contract review, appeal and complaint, corrective measures, preventive measures and improvement, records, internal audit and management review

Technical elements: personnel, facilities and environmental conditions, testing and calibration methods, equipment and reference materials, quantity traceability, sampling and sample disposal, result quality control and result report

3、 Compared with the difficulty of certification

In terms of technical requirements, the requirements of CMA and CNAs are similar. CNAs recognition is not limited by legal authorization, and CMA recognition must be limited by legal authorization. Therefore, CNAs recognition is easier than CMA certification. If the laboratory meets the requirements of CNAs standard and wants to give full play to its surplus ability to provide calibration and testing services for the society, it will be much easier to identify CMA. However, the local government believes that the local legal measurement technology institutions have surplus capacity, so it is difficult to accept the CMA application of enterprises and institutions.

Therefore, it is suggested that if it is an internal R & D Laboratory of the company, it is necessary to apply for CNAs accreditation according to the current calibration and testing needs of the company, standardize its own laboratory and obtain third-party accreditation. When it is necessary to provide point calibration or testing services for the society in the future, you can apply for CMA to the metrological competent department of the provincial government or CNCA.

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