The American Association of Physicists in Medicine (AAPM) accredits the UWADCL for the calibration of diagnostic and therapy radiation measurement instrumentation and radioactive sources. The UWADCL provides the highest quality and most comprehensive calibration service in the industry. The UWADCL is also accredited to ISO/IEC 17025 by the American Association for Laboratory Accreditation (A2LA).
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| Parameter / Equipment | Range | Best Uncertainty* (±) | Technique or Reference Standard |
| Therapy Class Ionization Chambers |
NIST calibrated 137Cs brachytherapy sources; reference class ionization chambers calibrated against NIST calibrated sources for short-lived isotopes such as 192Ir, 125I, 131Cs, and 103Pd. NIST traceable air kerma rate for Electronic Brachytherapy Sources. |
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| 60Co Air Kerma | Up to 150 cGY/min | 1.5% | |
| 60Co Dose to Water | Up to 150 cGy/min | 1.4% | |
| 137Cs Air Kerma | Up to 20 cGy/min | 1.6% | |
| X-rays | 20-250 kVp | 1.0% | |
| Diagnostic Class Ionization Chambers | |||
| X-rays | |||
| Tungsten Anode | 20-250 kVp | 1.9% | |
| Molybdenum Anode | 23-25 kVp | 1.9% | |
| Health Physics/Radiation Protection Ionization Chambers | |||
| 60Co Air Kerma | Up to 150 cGy/min | 1.5% | |
| 137Cs Air Kerma | Up to 150 cGy/min | 1.6% | |
| X-rays | 20-250 kVp | 1.9% | |
| Well-type Ionization Chambers (1U=1µGym2/hr) | |||
| HDR 192Ir | Up to 50 kU | 2.8% | |
| LDR137Cs, 131Cs, 125I, 103Pd, 192Ir | Up to 500U | 2.7% | |
| Electronic Brachytherapy Sources | Up to 5 mGy/sec | 4.0% | |
| Well-type Intravascular Ionization Chambers | |||
| 90Sr Absorbed Dose | Up to 200 mGy/s | 15% | NIST traceable activity and absorbed dose to water source calibrations |
| Radioactive Brachytherapy Sources | |||
| LDR 37Cs, 131Cs, 125I, 103Pd, 192Ir | Up to 500U | 1.9% | NIST calibrated 137Cs and 90Sr brachytherapy sources, reference class well-type ionization chambers calibrated against NIST calibrated sources for short-lived isotopes such as 192Ir, 125I, 131Cs, and 103Pd |
| Electrometers** | Charge (25pC - 10 μC) | 0.21% | NIST traceable (A2LA accredited) capacitor calibration, voltage (through calibrated DMM), and period / time (through calibrated universal counters). |
| Current (1pA - 1000 nA) | 0.21% | ||
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* Best Uncertainties represent expanded uncertainties using a coverage factor of k=2 which provides a level of confidence of approximately 95%. ** The UWMRRC has the capability to perform minor repairs or battery replacement for non-functioning electrometers. PLEASE CLICK HERE for more details. Please Note, Adobe Acrobat Reader version 5.0 is required to use the form. CLICK HERE to get the current version of Adobe Acrobat Reader. |
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