Understanding Correction
Understanding Correction

Materials provided by KOLAS
Understanding Correct Correction
This is the process of verifying the reliability of measured values by comparing them with a standard with higher precision to maintain the precision and accuracy of the measuring instrument.
This processMaintain traceability to national measurement standardsIt helps to keep errors that may occur due to the use, wear, and environmental changes of the measuring instrument within an acceptable range.
Through thisEnsuring product homogeneity and performance during the manufacturing processAnd, we ensure that the measurement results from testing and research institutions are internationally reliable.

Materials provided by KOLAS
Guide to Using Correction Certificates
Accurate measurement equals trust. Because the precision of measuring instruments can deteriorate over time, calibration is essential to maintain reliability. International standards (such as ISO) also emphasize regular calibration as a key element of quality control. The need for calibration of a measuring instrument should be determined not by its type, but by its impact on quality. In particular, equipment used for testing, inspection, and legal metrology must be calibrated. Users should set the calibration frequency based on the frequency of use and precision requirements. However, it is generally safe to follow the recommended intervals of national standards (such as KOLAS).
HCT, an accredited calibration institute

COALS
Korean Accreditation OrganizationCOALS
(Korea Laboratory Accreditation Scheme)The Korea Laboratory Accreditation Scheme (KOLAS) is a government organization that promotes the establishment of a national standards system and the operation of a calibration laboratory accreditation system. By participating in international accreditation body councils, such as APLAC (Asia Pacific Laboratory Accreditation Cooperation) and ILAC (International Laboratory Accreditation Cooperation), and signing MRAs (Mutual Recognition Agreements), KOLAS actively addresses technical trade barriers from developed countries and contributes to the development and growth of domestic industries. By successfully completing equivalence assessments between accreditation bodies and consistently participating in international accreditation and proficiency testing, KOLAS is enhancing Korea's status in the field of conformity assessment.

A2LA
American Testing Laboratory Accreditation OrganizationA2LA
(American Association for Laboratory Accreditation)As a leading accreditation body for testing and calibration laboratories in the United States, A2LA evaluates and certifies the technical capabilities and quality systems of testing and calibration laboratories according to international standards. Based on standards such as ISO/IEC 17025, A2LA provides certification that ensures fairness and reliability. A2LA participates in the globally recognized International Laboratory Accreditation Agreement (ILAC MRA) system, ensuring international recognition of its accreditation.

