About Calibration Laboratory Accreditation
A2LA is the largest and most well-recognized accreditor of calibration laboratories in the United States.
The A2LA Calibration Laboratory Accreditation Program services customers in all metrology industries and provides opportunities for accreditation in virtually every field of measurement. Calibration laboratories in our accreditation program support testing laboratories, other calibration laboratories, industry, manufacturing, government and regulatory bodies and all other sectors in which measurement confidence is critical.
Accreditation in our calibration program ensures a quality assessment with technical experts who have experience in the field of measurement being assessed, resulting in greater customer confidence in measurement results. Get a quote or contact us to learn more!
Calibration Laboratory Accreditation Program Requirements
- ISO/IEC 17025 General Requirements for the Competence of Testing and Calibration Laboratories
- A2LA Calibration Program Requirements
Calibration Laboratory Accreditation Subprograms*
- ANSI/NCSL Z540-1
- ANSI/NCSL Z40.3
- ISO 15195
- State Legal Metrology Accreditation Program
*These optional accreditations are only offered in combination with ISO/IEC 17025. These are generally only pursued when a calibration laboratory’s customers specify compliance to the additional requirements of these standards. The State Legal Metrology accreditation program is only available to state laboratories within the United States.
Learn More in the A2LA Calibration Program Handbook
The the A2LA Calibration Program Handbook is a ‘one stop’ shop for all the requirements, guidance documentation, and related technical guidance that has been developed by the A2LA Measurement Advisory Committee for A2LA’s Calibration Accreditation Program.
What’s In Calibration Handbook?
- Definitions
- A2LA Accreditation Process
- R205-Specific Requirements-Calibration Laboratory Accreditation Program
- Guidance Documents
- References