Which is better, CMA or CNAs certification? Special requirements for two in one review of CMA and CNAs

Date：2022-04-27 14:19:34Views：1790

Some of the company's products must be stamped with CNAs and CMA seals when making quality inspection reports, which requires many relevant industry laboratories to pass CNAs (laboratory accreditation) and CMA (qualification accreditation). What is the difference between CMA and CNAs? Which is better, CMA or CNAs certification? This paper has collected and sorted out some materials, which are expected to be of great reference value to all readers.

First, let's look at the difference between CMA and CNAs:

① CNAs is a laboratory accreditation, which is voluntary. Of course, if it is a national laboratory, it must also pass the accreditation of CNAs;

Cam is metrological certification and is mandatory.

② Different objects and ranges.

③ Different basis and nature.

④ Different organization and implementation.

⑤ CNAs can realize international mutual recognition, and CMA has Chinese characteristics.

⑥ CNAs is any laboratory that can apply for accreditation. As long as you have the corresponding testing ability, you can issue certificates through accreditation, including first-party, second-party, third-party laboratories, enterprises and even personal laboratories, etc., covering a wide range; CMA is generally only for third-party laboratories, including a small number of specific second-party laboratories. The scope is relatively small. Generally, it is qualified only with the authorization of the government.

Contact between CMA and CNAs: ① the competent department is the same; ② Same purpose; ③ The assessment contents are basically the same; ④ Both belong to the field of conformity assessment.

After understanding the differences between CNAs and CMA, let's take a look at the special requirements for the two in one review of CMA and CNAs. If laboratory accreditation is applied for at the same time, that is, the "two in one" review of CMA and CNAs, in addition to the requirements of laboratory accreditation standards, the following 17 requirements must be met according to the review criteria for qualification of inspection and testing institutions: the special requirements for simultaneous application of laboratory accreditation and metrological certification, and the review contents

1. The laboratory applying for metrological certification shall generally be an independent legal person; The non independent legal person needs to be authorized by the legal person, be able to independently undertake the impartial inspection of the third party, conduct external acts and carry out business activities independently, and have independent accounts and independent accounting.

2. In the absence of the technical or quality supervisor, its agent shall be appointed and specified in the quality manual.

3. The top management, technical director, quality director and department heads of the laboratory shall have appointment documents.

4. The change of top management and technical director shall be reported to the issuing authority or authorized department for confirmation.

5. The top manager of the non independent legal person laboratory shall be the administrative leading member of its legal entity.

6. The technical director of the laboratory shall have the technical title of engineer or above and be familiar with the business.

7. Safety facilities such as power cut, water cut and fire prevention shall be provided.

8. Appropriate measures shall be taken to ensure that the laboratory has good internal management and meets the health and environmental protection requirements of relevant personnel.

9. If you want to use instruments and equipment outside the permanent control range of the laboratory (limited to low frequency and expensive), you should ensure that they meet the corresponding requirements. The purchase, acceptance and circulation of instruments and equipment shall be controlled. Special inspection instruments and equipment that have not been finalized need to provide verification certificates from relevant technical units

10. The archives of instruments and equipment shall have the status and acceptance records at the time of acceptance.

11. The instruments and equipment for self calibration / calibration shall be in accordance with the requirements of the national metrological verification system. Draw the quantity value transmission block diagram (when applicable) that can be traced to the national measurement basis (standard), so as to ensure that the quantity value of measuring instruments and equipment in use meets the requirements of measurement regulations.

12. The highest measurement standard for measurement verification must pass the examination in accordance with the relevant provisions of the measurement Law of the people's Republic of China.

13. Certified reference materials within the validity period shall be used.

14. In the absence of national standards, national, industrial and local inspection methods, the laboratory shall try its best to choose the methods published in international standards or national standards or published by well-known technical organizations or relevant scientific and technological documents or magazines, but shall be confirmed by the technical director of the laboratory.

15. Record changes shall be made in accordance with appropriate procedure specifications.

16. The legal unit of measurement shall be adopted.

17. The subcontracting proportion must be controlled (limited to low frequency, expensive and special items of instruments and equipment).

The above is the relevant content of "CMA and CNAs certification" brought by the core creation test. I hope it can be helpful to you. We will bring more wonderful content later. The company's testing services cover: electronic component testing and verification, IC authenticity identification, product design and material selection, failure analysis, function testing, factory incoming material inspection, tape braiding and other testing items. Welcome to call Chuangxin testing. We will serve you wholeheartedly.