SSDL Calibration Service
The Dosimetry Laboratory of IBA Dosimetry offers calibration of dosimeters used in radiation therapy and diagnostic radiology according to the recent Dosimetry Codes of Practice in a wide range of radiation quantities and beam qualities. Our Dosimetry Laboratory is accredited by DAkkS and it is a member of the IAEA/WHO SSDL Network .
We offer SSDL calibrations internationally recognized by law and with documented traceability to the primary standards. Therefore our calibrations are on the leading edge of achievable accuracy.
The entire scope of the services offered by the Dosimetry Laboratory is accredited according to ISO 17025:2005 standards.
Ionization chambers and electrometers are calibrated at IBA Dosimetry Calibration Laboratory by the substitution method using our reference standards calibrated at the PTB Braunschweig (Physikalisch-Technische Bundesanstalt, German National Institute of Physics and Metrology). IBA Dosimetry Laboratory participates in inter-laboratory comparisons organized by recognized dosimetry laboratories to verify the declared level of performance in order to offer the most precise calibration achievable.
Calibrations in terms of following measuring quantities are available:
- Absorbed dose to water Dw, 1 mGy – 20 Gy (X-rays 20 kV - 280 kV, and Cobalt 60)
- Air Kerma Ka, 1 mGy – 20 Gy (X-rays 20 kV - 280 kV, and Cobalt 60)
Reference conditions:
- Reference air pressure: 1013.25 hPa
- Temperature: 20.0 °C
Table of expanded uncertainties (coverage factor k = 2).
The laboratory performs calibrations for the following beam qualities:
Dosimeters for Radiation Therapy
- X-rays 50, 70, 100, 120, 140, 150, 200, 250, 280 kV (TH qualities according to DIN 6809-5)
- X-rays 20, 30, 40, 50, 70, 100 kV (TW qualities according to DIN 6809-4)
- Cobalt 60
Dosimeters for Diagnostic Radiology
- X-rays 40, 50, 60, 70, 80, 90, 100, 120, 150 kV Conventional X-ray (not CT) (RQR and RQA qualities according to IEC 61267)
- X-rays 25, 30, 35 kV Mammography (Mo anode, Mo window with or without filtration of 2 mm Al)
More detailed information on X-ray beam qualities.
Miscellaneous services
- MTK (Messtechnische Kontrolle ) valid for Germany only according to MPBetreibV § 11 for therapy dosimeters up to 1.33 MV
- Electrical measuring quantities charge (C) and current (A) measured by highly sensitive electrometers
- Long term irradiation (Cobalt 60) for testing issues
