Accredia Calibration Center

Accredia calibration center
Riels® Instruments directly avails itself of the collaboration of the most important Accredia calibration centers recognized in Italy and/or foreign manufacturers.

The certificate issued by the Acrredia calibration centers attests that the calibration of the instrument was performed according to the standard procedures recognized as valid by the competent primary institutes. Accredia certified instruments and samples are usually used as primary company samples for the subsequent calibration of other instruments.

Riels® Instruments issues two types of calibration documents: the Calibration Certificate (Accredia) and the Calibration Report with traceability to national standards as it uses Accredia calibration centers.


ACCREDIA is the single national accreditation body designated by the Italian government. Its task is to certify the competence, impartiality and independence of those who must ensure a high degree of protection of public interests, such as health, safety and the environment.
ACCREDIA is a private non-profit association that operates under the supervision of the Ministry of Economic Development and carries out an activity of public interest, as a guarantee for institutions, businesses and consumers.
ACCREDIA is a member of the Community and international accreditation networks and is a signatory of the related Mutual Recognition Agreements, by virtue of which the laboratory tests and certifications of the bodies accredited by ACCREDIA are recognized and accepted in Europe and in the world.

THE ACCREDIA CALIBRATION CERTIFICATE is a document that can only be issued by one of the accredited ACCREDIA calibration centers.
This certificate is officially valid in Italy and with mutual recognition in the countries belonging to the EA (European Cooperation for Accreditation) and ILCA (International Laboratory Accreditation Cooperation).
ACCREDIA certificates relieve their user from any obligation to demonstrate to third parties that the calibrations have been performed in accordance with the reference standard of the quality system of calibration centers (see UNI CEI EN ISO / IEC 17025) and with approved procedures by ACCREDIA.
The calibration laboratories accredited by an accreditation body signatory of the international agreements of mutual recognition EA MLA and ILAC MRA, such as ACCREDIA, guarantee the competence in carrying out tests and calibrations in compliance with international standards.
The Calibration Certificate contains all information related to the instrument, such as: calibrationdate and serial number, measurement result, uncertainties, reference standards, instrumentationused, environmental conditions during measurements.

THE CALIBRATION REPORT with traceability to national standards is a document issued by Calibration Centers through which the traceability of the measurement to national standards is ensured, without accreditation by the relevant bodies. The technical validity of these documents derives from the qualification of the laboratory, the technical competence of the operators and the metrological procedures used.
The calibration is an operation that allows to determine the characteristics of a measuring instrument in order to guarantee precise and reliable results.


How often should I calibrate my instruments?
There is no deadline defined by law. In fact, the ideal timing depends on many factors: the use of the equipment, their storage method, the internal processes of each company that establish maintenance, the timing dictated by the procedures related to quality systems, such as ISO 9001. It is good practice to calibrate the instruments annually.

Can I have same-day calibration?
The calibration of an instrument is a process made up of compulsory steps: one of these is thermal conditioning. A time interval of 24 hours that must precede the calibration. For this reason it is not possible to proceed with the operations immediately after the arrival of the instrument.

Should I also ship the accessories with the instrument?
Yes, the instrument must be shipped, functioning and properly packaged, complete with accessories and user manual.

What is the difference between Calibration and Tuning?
Calibration is an operation that allows you to define the metrological characteristics of an instrument, in order to establish its accuracy.The tuning, also called calibration in Italian, is a procedure that aims to make the measuring instrument in question more accurate and, often, has the consequence of improving its accuracy.

What are Accuracy and Precision?
Measurement Accuracy is not a quantity and a numerical value is not assigned to it. A measurement is considered the more accurate the smaller the measurement errors that characterize it.Measurement Accuracy is expressed numerically by imprecision measurements, such as standard deviation, variance, or coefficient of variation under specified measurement conditions.

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