ISO 17025 (For Testing and Calibration for Laboratories) NABL



WHAT IS ISO / IEC 17025 or NABL?

ISO/IEC 17025 is the main standard used by testing & calibration laboratories. Originally known as ISO/IEC guide 25,ISO/IEC 17025 was initially issued by the international organization for the standardization in 1999. It was first published in 2001 & on 2005



Advantages of ISO 17025 (For Testing and Calibration for Laboratories) NABL


  • National & international recognition
  • Recognizes the technical competence or laboratory staff
  • Assures the client that results are technically valid
  • Provides comparability in measurements
  • Decision makers can rely on test results
  • Improves staff motivation
  • Ensures better support in the event of legal challenges
  • To assist in the development of the new programmes
  • To reduce technical barriers in trade
  • Saves money by getting it right first time

ISO 17025 (For Testing and Calibration for Laboratories) NABL Accreditation


Management Requirements


  • Organization
  • Quality Management Team
  • Document Control
  • Review of Contracts
  • Subcontracting of tests and calibration
  • Purchasing services and supplies
  • Service to the client
  • Complaints
  • Control of non-conforming work
  • Corrective action
  • Preventive action
  • Control of quality records
  • Internal audits

Technical Requirements


  • General
  • Personnel
  • Accomodation
  • Tests methods and validation
  • Equipment
  • Measurement traceability
  • Sampling
  • Handling of test and calibration items
  • Assuring the quality of tests and calibration results
  • Reporting the results

Key Steps Toward Accreditation are


  • ISO/IEC 17025 accreditation should be well thought out and well prepared. It can be quite expensive but can also have big benefits.
  • The balance between costs and benefits should be worked out and documented
  • Going for ISO/IEC 17025 will impact the entire laboratory and supporting services such as human resources, documentation and finance departments. Therefore, while the decision to initiate and fund the project will be made by management, all affected departments should be involved in the process
  • The entire process is divided into two phases: Investigation phase and implementation phase. In the investigation phase information is collected to decide if going for accreditation makes business sense
  • Once the decision is made the laboratory develops and implements documentation in preparation for the Accreditation assessment

Documentation