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Calibration · Glossary

What is ISO/IEC 17025?

lab competence standardCalibration

ISO/IEC 17025 is the international standard for the competence of testing and calibration laboratories.

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ISO/IEC 17025 Explained

Accredited labs are assessed for technical competence, impartiality, uncertainty evaluation and traceability. In India, NABL accredits to it.

Using accredited calibration for reference standards is the simplest way to prove traceability.

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Calculators for ISO/IEC 17025

CalculatorMeasurement Uncertainty CalculatorFree online calculator with formula and worked example.

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Free downloadCalibration Certificate Format in ExcelFree download in Excel and PDF.

Frequently Asked Questions

What is ISO/IEC 17025?

ISO/IEC 17025 is the international standard for the competence of testing and calibration laboratories.

Is ISO 9001 certification the same?

No. ISO 9001 covers quality management; ISO/IEC 17025 covers lab technical competence.

How do I check accreditation scope?

Look up the lab scope on the accreditation body website; it lists parameters and uncertainties.

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Calibration termCalibrationCalibration is the comparison of an instrument reading with a known reference standard, recording the…Calibration termAccuracyAccuracy is how close a measurement is to the true value; in specifications it is the maximum expected error.Calibration termAccuracy SpecificationAn accuracy specification states how an instrument maker defines its maximum error, such as % of span, %…Calibration termPrecisionPrecision is how closely repeated measurements of the same quantity agree with each other, regardless of…Calibration termRepeatabilityRepeatability is the closeness of successive readings of the same input under the same conditions, same…Calibration termReproducibilityReproducibility is the closeness of results for the same quantity when conditions change, such as…

All calibration terms · Full glossary A to Z

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