Calibration of laboratory equipment is the process of verifying and adjusting instrument accuracy by comparing measurement results against traceable reference standards. Calibration ensures that laboratory instruments produce reliable, accurate, and repeatable results, supporting data integrity and quality assurance in testing and analytical work.

Calibration typically involves performance checks, adjustment (if required), and documentation of measurement uncertainty, conducted under controlled conditions using certified reference standards. Common equipment requiring calibration includes analytical balances, pH meters, temperature-controlled devices, volumetric equipment, and analytical instruments.