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Calibration of secondary standards

Possible calibrations:

Measurand Symbol Unit Energy range Radiation qualities acc. to
Air kerma Ka Gy 10 kV - 300 kV
Cs-137, Co-60
ISO 4037, IEC 61267
Absorbed dose to water Dw Gy 10 kV - 300 kV DIN 6809-4
Air kerma-lenght product PKL Gy m 40 kV - 150 kV IEC 61267
Air kerma-area product PKA Gy m2 40 kV - 150 kV IEC 61267
Practical peak voltage Û V 20 kV - 150 kV IEC 61267

Initiates file downloadDownload complete list of radiation qualities available for calibrations.

Opens external link in new windowCatalogue of unfiltered x-ray spectra up to 50kV

Initiates file downloadPTB information on ICRU90 changes to calibrations in air kerma

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Directions for clients:


Inquiries concerning calibrations

Clients address their inquiry (for example 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 must include the order form for Initiates file downloadcalibrations. 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
Opens external link in new windowFees and charges

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