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Calibration and measurement services: Ionizing radiation

BIPM Ionizing Radiation Department Contact:José María Los Arcos
 Complete list of uncertainties for services offered to NMIs by the BIPM in Ionizing Radiation

Absorbed dose-rate to water. National standard ionization chamber, 1E-03 Gy s–1 to 10E-03 Gy s–1
Relative expanded uncertainty (k = 2, level of confidence approximately 95%) in %: 0.6
Source: Co-60
Calibration against a primary standard in a water phantom
BIPM primary standard under CCRI reference conditions, Rapport BIPM-2011/04
Service identifier: BIPM-RAD-1001

Air kerma-rate. National standard ionization chamber, 1E-03 Gy s–1 to 10E-03 Gy s–1
Relative expanded uncertainty (k = 2, level of confidence approximately 95%) in %: 0.3
Source: Co-60
Calibration against a primary standard free in air
BIPM primary standard under CCRI reference conditions, Rapport BIPM-2011/04
Service identifier: BIPM-RAD-1002

Air kerma-rate. National standard ionization chamber, 5E-04 Gy s–1
Relative expanded uncertainty (k = 2, level of confidence approximately 95%) in %: 0.4
X-ray: 100 kV to 250 kV
Calibration against a primary standard free in air
BIPM primary standard under CCRI reference conditions, Rapport BIPM-2011/04
Service identifier: BIPM-RAD-1003

Air kerma-rate. National standard ionization chamber, 1E-03 Gy s–1
Relative expanded uncertainty (k = 2, level of confidence approximately 95%) in %: 0.4
X-ray: 10 kV to 50 kV
Calibration against a primary standard free in air
BIPM primary standard under CCRI reference conditions, Rapport BIPM-2011/04
Service identifier: BIPM-RAD-1004

Air kerma-rate. National standard ionization chamber, 2E-03 Gy s–1
Relative expanded uncertainty (k = 2, level of confidence approximately 95%) in %: 0.4
X-ray: 23 kV to 50 kV (Mammography)
Calibration against a primary standard free in air
BIPM primary standard under CCRI reference conditions, Rapport BIPM-2011/04
Service identifier: BIPM-RAD-1004M

Air kerma-rate. National standard ionization chamber, 2E-05 Gy s–1
Relative expanded uncertainty (k = 2, level of confidence approximately 95%) in %: 0.4
Source: Cs-137
Calibration against a primary standard free in air
BIPM primary standard under CCRI reference conditions, Rapport BIPM-2011/04
Service identifier: BIPM-RAD-1005

Air kerma-rate. National standard ionization chamber, 7E-06 Gy s–1 to 8E-06 Gy s–1
Relative expanded uncertainty (k = 2, level of confidence approximately 95%) in %: 0.3
Source: Co-60
Calibration against a primary standard free in air
BIPM primary standard under CCRI reference conditions, Rapport BIPM-2011/04
Service identifier: BIPM-RAD-1006

Ambient dose equivalent-rate. National standard ionization chamber, 2E-06 Sv s–1
Relative expanded uncertainty (k = 2, level of confidence approximately 95%) in %: 1.0
Source: Cs-137
Calibration against a primary standard in an ICRU spherical phantom
BIPM primary standard under CCRI reference conditions, Rapport BIPM-2011/04
Service identifier: BIPM-RAD-1007

Ambient dose equivalent-rate. National standard ionization chamber, 8E-07 Sv s–1 to 9E-07 Sv s–1
Relative expanded uncertainty (k = 2, level of confidence approximately 95%) in %: 0.6
Source: Co-60
Calibration against a primary standard in an ICRU spherical phantom
BIPM primary standard under CCRI reference conditions, Rapport BIPM-2011/04
Service identifier: BIPM-RAD-1008



Traceability to the SI through the BIPM
Subject area:
What is traceability?
BIPM policy on stating uncertainties
Summary charts: Technical services per Member State
Chemistry
Electricity
Ionizing Radiation
Mass
Time
Related articles:
Comparisons piloted by the BIPM
BIPM calibration and measurement services
BIPM work programme
Joint BIPM, OIML, ILAC and ISO declaration on metrological traceability