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Calibration of secondary standards

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Directions for clients:


Dear Sirs, dear Madams,

We have to inform you that our two main x-ray facilities will be under mandatory repairs from the end of March 2022 up to the beginning of August 2022. Our calibration services are only available to a limited extent during this time. Please do not hesitate to contact us via Opens local program for sending emailCaliGray(at)ptb.de should you require any further details or information.


Inquiries concerning calibrations
Clients address their inquiry (e.g. via the e-mail address Opens local program for sending emailCaliGray(at)ptb.de) to the contact person listed on the right-hand side of this page. The inquiry should specify the kind and the scope of the calibration(s) to be carried out (e.g. the desired Initiates file downloadradiation qualities and details of the dosemeter(s) to be calibrated. In response information will be provided on the time and estimated costs of the calibration and who should be contacted for further steps.

Procedure after acceptance of the calibration order
Once the order has been placed the customer will receive a confirmation and he should send the equipment to the person in charge at PTB, where the equipment will be calibrated in compliance with the specifications of the order. After calibration, the dosemeter will be returned to the customer together with a calibration certificate which states the calibration factor and its uncertainty as well as the reference and calibration conditions.

Calibration costs
The customer will be invoiced for the calibration costs in compliance with the "Kostenverordnung für Nutzleistungen der PTB" ("Regulations governing charges for services rendered by PTB). Average fees have been fixed for typical calibrations of dosemeters (the average fee currently valid for calibrations).

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