What is calibration?

Calibration is checking the balance with a reliable weight standard.

Calibration answers the question: how accurate is the scale? The result of calibration is the determination of the error and uncertainty of the balance.

The error is the difference between the standard mass value and the scale's indication. Uncertainty defines the scatter limits of the determined measurement error.

A reliable mass standard is a standard checked with traceability, i.e. there must be an uninterrupted chain of references to a national or international standard. In practice, it must be a mass standard with a valid calibration certificate

Calibration is used to assess the condition and suitability of the balance for measurement tasks.

In addition, calibration enables the calculation of error and uncertainty of measurements made with this balance.