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ema entidad mexicana de acreditación, a.c., the Mexican accreditation body, is the first non-government body in our country for the accreditation of the Conformity Assessment Bodies, which comprise testing laboratories, calibration laboratories, medical laboratories, inspection bodies and certification bodies, Proficiency Testing Providers and the Greenhouse Gas Emissions Verification / Validation Bodies (GHE VVB).

The challenges that present the exchange of products, assets and services in a globalised world, were the driving force for the creation of ema; the aim is to provide tools for both, industry and trade,  in order to meet equal competition conditions, and increase broadly our insertion into international markets. Since January 2006, ema fulfills the worldwide standard for accreditation bodies: NMX-EC-17011-IMNC-2005 “Conformity assessment - General requirements for accreditation bodies accrediting conformity assessment bodies”.

ema has proudly received the highest international recognition, both from IAF (International Accreditation Forum) and ILAC (International Laboratory Accreditation Cooperation), which confirms that our accreditation body works in accordance with national and international standards. ema also received the Ética y Valores (Ethics and Values) 2005 and 2012 Award, given by CONCAMIN, the Mexican industrial Chamber Confederation, which reinforces our quality as a team and our commitment with our institution’s aims.


Act by which an accreditation body recognizes the technical competence and reliability of testing, calibration, and medical laboratories; as well as verification units (inspection bodies); and certification bodies for the Conformity Assessment


Our body has managed to fulfillits activities and objectives thanks to its financing sources, which are:
  1. Accreditation services
  2. Associate’s fees.
  3. Training courses.
  4. Public support and stimulus and/or donations from federal and state agencies, national, regional and international bodies, since our body is a non-taxpayer legal entity, being a non-profit body.
  5. Sale of Holograms for accredited verification units in the field of measuring instruments.
  6. Internship or consultancy services to other accreditation bodies


Formerly, Conformity Assessment Bodies were accredited by the Mexican federal government, more specifically through the Dirección General de Normas (DGN) (General Directorate of Standards) of the Secretaría de Comercio y Fomento Industrial (SECOFI) (Ministry of Commerce and Industrial Development), now known as the Ministry of Economy.
Given the changes in the foreign markets, the competitiveness required in a globalised commerce, and aiming to support the national productive plant, the Federal Law on Metrology and Normalization was reformed between 1992 and 1997. Because of this legal transformation, an impartial, inclusive, professional and privately managed body was created in order to perform this important task for Mexico’s productive sector. Thus, after the publication on the 15th of January 1999, in the Official Journal of the Federation of the Ministry of Commerce and Industrial Development’s authorization, ema begins to operate as the first accreditation body in Mexico.


ema’s organizational structure has been established in such a manner that in both, government and collegiate bodies, an impartial structure is kept to provide objectivity, transparency and reliability for accreditations and authorizations. Within this structure, participation of all sectors interested in the development of policies and principles related to contents and functions of the national accreditation system are considered, where no particular interests prevail.  This is properly documented.
All members of ema take the task of ensuring that the policies and procedures under which the body operates are administered in a non-discriminative manner. The services the ema offers are accessible to all applicants whose activities are within the field of consideration. There are no conditions, financial or other, that restrict participation. Access to the services provided by ema is not conditioned by the size of the applicant, nor by membership of any organization or group, nor by the number of already accredited Conformity Assessment Bodies.

ema ensures that its General Assembly, Board of Directors, personnel, assessment committees and subcommittees, technical opinion commissions, appeal commissions, and the technical/testifier evaluators/experts, act always in an objective manner and that they are not collaborating under any undue pressure, be it financial, commercial or conflict of interests that could make them act in a non impartial or discriminatory manner.

ema ensures that a competent Assessment Committee reaches every decision to determine each accreditation, and that every determination is made by different personnel from that who performed the assessment.

ema limits its requirements, evaluations, and decisions to matters related to accreditation, and doesn’t offer the conformity evaluation services that Conformity Assessment Bodies provide, nor counseling that might compromise the objectivity and impartiality in the processes of evaluation, and in the decision over accreditation and acknowledgement.

ema also requires that the accredited CAB’s and the recognized PTB’s, maintain impartiality and integrity in their activities within the field of accreditation and recognition.

ema ensures that the activities performed by its related bodies do not compromise confidentiality, objectivity or impartiality of accreditations. The bodyhas properly analyzed and documented its relationship to these organizations.



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