PCA accreditation

Accredited methods

General provisions

The test and calibration methods used in the Laboratory are standardized methods using:
  • methods published in national and international standards,
  • GUM development,
  • equipment manufacturers development,
  • achievements of science and technology,
  • basic laws of physics.
Testing and calibration methods used are proper methods for executing a fixed range of services in accordance with customer expectations.

Testing and calibration methods are in accordance with valid (currently binding and / or harmonized) standards. In order to ensure the above compliance in the Laboratory, the procedure described in the internal instructions applies.

Development of testing and calibration methods

The development of testing and calibration methods is carried out in a planned manner, taking into account the client’s needs in accordance with the internal procedure. The design cycle begins with the approval of the application for the development of a test / calibration method, appointment of a team leader, development of work schedule and designation of the staff responsible for their implementation..

The work schedule includes:
  • development of input data (assumptions),
  • overview of input data,
  • development of the method,
  • purchase of equipment (investments),
  • validation of the method,
  • review of the results of validation,
  • method approval (verification),
  • development of documentation,
  • training,
  • admission of the developed method for use,
  • responsible for the implementation of each stage.

The design process thus accomplished achieves the intended purpose. It confirms the correctness of the selection of the method, equipment, and helps the staff obtain the necessary competences. The staff is then qualified for the practical implementation of the test, calibration method.


Validation is subject to:
  • non standardized methods,
  • methods designed in the Laboratory,
  • normalized methods, used outside their intended range,
  • normalized methods that have been extended or modified,
  • software made,
  • equipment purchased or made by the Laboratory.

Validation is done by:
  • performing the test or calibration and evaluating the results obtained,
  • comparison of results obtained by other methods,
  • bilateral comparative tests,
  • knowledge of the factors that influence the uncertainty of research,
  • use of reference patterns.

EquipmentManagement system