BIPM.RI(I)-K2 and APMP.RI(I)-K2
MEASURAND Air kerma
Radiation quality 10 kV
Degrees of equivalence represented by Di = (xI - xR) /xR and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mGy/Gy.
BIPM.RI(I)-K2 and APMP.RI(I)-K2
MEASURAND Air kerma
Radiation quality 30 kV
Degrees of equivalence represented by Di = (xI - xR) /xR and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mGy/Gy.
For a graph with an enlarged scale, please click here
BIPM.RI(I)-K2 and APMP.RI(I)-K2
MEASURAND Air kerma
Radiation quality 25 kV
Degrees of equivalence represented by Di = (xI - xR) /xR and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mGy/Gy.
For a graph with an enlarged scale, please click here
BIPM.RI(I)-K2 and APMP.RI(I)-K2
MEASURAND Air kerma
Radiation quality 50 kVb
Degrees of equivalence represented by Di = (xI - xR) /xR and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mGy/Gy.
For a graph with an enlarged scale, please click here
BIPM.RI(I)-K2 and APMP.RI(I)-K2
MEASURAND Air kerma
Radiation quality 50 kVa
Degrees of equivalence represented by Di = (xI - xR) /xR and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mGy/Gy.
For a graph with an enlarged scale, please click here
BIPM.RI(I)-K2 and APMP.RI(I)-K2
MEASURAND Air kerma
Radiation quality 10 kV
Degrees of equivalence represented by Di = (xI - xR) /xR and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mGy/Gy.
LABi | Di | Uneg,i | Upos,i | |
---|---|---|---|---|
mGy/Gy |
mGy/Gy |
mGy/Gy |
||
LNE-LNHB | -0.8 | 4.0 | ||
ENEA | -2.2 | 4.5 | ||
MKEH | -2.7 | 4.7 | ||
VNIIM | -3.2 | 5.3 | ||
VSL | 7.8 | 7.0 | ||
PTB | 0.3 | 4.9 | ||
BEV | -2.0 | 13.8 | ||
NMIJ | 3.2 | 6.5 | ||
CMI | 5.5 | 7.4 | ||
KRISS | -1.6 | 4.4 | ||
NPL | -12.2 | 4.9 | ||
NRC | 0.3 | 7.1 | ||
NIM | -2.3 | 7.7 | ||
GUM | -5.9 | 5.8 | ||
ARPANSA | 11.2 | 22 | ||
MNA | 42.0 | 14.0 | ||
INER | 2.8 | 13.4 | ||
IAEA | 4.5 | 10.8 |
BIPM.RI(I)-K2 and APMP.RI(I)-K2
MEASURAND Air kerma
Radiation quality 30 kV
Degrees of equivalence represented by Di = (xI - xR) /xR and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mGy/Gy.
LABi | Di | Uneg,i | Upos,i | |
---|---|---|---|---|
mGy/Gy |
mGy/Gy |
mGy/Gy |
||
LNE-LNHB | 0.2 | 4.0 | ||
NIST | -3.1 | 8.7 | ||
ENEA | -3.2 | 4.5 | ||
MKEH | -2.5 | 4.7 | ||
VNIIM | -2.1 | 5.3 | ||
VSL | 6.9 | 7.0 | ||
PTB | -1.8 | 4.9 | ||
BEV | -0.8 | 9.8 | ||
NMIJ | 1.0 | 6.5 | ||
CMI | 3.9 | 7.4 | ||
KRISS | -2.4 | 4.4 | ||
NPL | -11.4 | 4.9 | ||
NRC | -2.4 | 7.1 | ||
NIM | -1.1 | 7.7 | ||
GUM | 5.2 | 5.8 | ||
BFKH | -4.3 | 6.8 | ||
ARPANSA | -7.6 | 9.1 | ||
MNA | 25.7 | 14.0 | ||
BARC | 13.5 | 100.0 | ||
INER | 8.6 | 13.4 | ||
IAEA | 2.8 | 10.8 |
BIPM.RI(I)-K2 and APMP.RI(I)-K2
MEASURAND Air kerma
Radiation quality 25 kV
Degrees of equivalence represented by Di = (xI - xR) /xR and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mGy/Gy.
LABi | Di | Uneg,i | Upos,i | |
---|---|---|---|---|
mGy/Gy |
mGy/Gy |
mGy/Gy |
||
LNE-LNHB | 0.7 | 4.0 | ||
NIST | 0.0 | 8.7 | ||
ENEA | -2.4 | 4.5 | ||
MKEH | -1.2 | 4.7 | ||
VNIIM | -2.2 | 5.3 | ||
VSL | 7.5 | 7.0 | ||
PTB | -2.1 | 4.9 | ||
BEV | -1.3 | 9.8 | ||
NMIJ | -2.3 | 6.5 | ||
CMI | 4.5 | 7.4 | ||
KRISS | -1.6 | 4.4 | ||
NPL | -11.1 | 4.9 | ||
NRC | -1.4 | 7.1 | ||
NIM | 0.5 | 7.7 | ||
GUM | 1.9 | 5.8 | ||
BFKH | -4.0 | 6.8 | ||
MNA | 25.9 | 14.0 | ||
BARC | 42.8 | 100.0 | ||
INER | 8.3 | 13.4 | ||
IAEA | 4.3 | 10.8 |
BIPM.RI(I)-K2 and APMP.RI(I)-K2
MEASURAND Air kerma
Radiation quality 50 kVb
Degrees of equivalence represented by Di = (xI - xR) /xR and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mGy/Gy.
LABi | Di | Uneg,i | Upos,i | |
---|---|---|---|---|
mGy/Gy |
mGy/Gy |
mGy/Gy |
||
LNE-LNHB | 0.1 | 4.0 | ||
NIST | 1.5 | 8.7 | ||
ENEA | -2.0 | 4.5 | ||
MKEH | -2.6 | 4.7 | ||
VNIIM | -1.3 | 5.3 | ||
VSL | 11.5 | 7.0 | ||
PTB | -1.1 | 4.9 | ||
BEV | -0.8 | 9.8 | ||
NMIJ | -0.9 | 6.5 | ||
CMI | 4.2 | 7.4 | ||
KRISS | -1.8 | 4.4 | ||
NPL | -10.1 | 4.9 | ||
NRC | 0.6 | 7.1 | ||
NIM | -2.5 | 7.7 | ||
GUM | 3.1 | 5.8 | ||
BFKH | -0.4 | 6.8 | ||
ARPANSA | -5.4 | 9.1 | ||
MNA | 34.9 | 14.0 | ||
BARC | 30.9 | 100.0 | ||
INER | 6.4 | 13.4 | ||
IAEA | 4.9 | 10.8 |
BIPM.RI(I)-K2 and APMP.RI(I)-K2
MEASURAND Air kerma
Radiation quality 50 kVa
Degrees of equivalence represented by Di = (xI - xR) /xR and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mGy/Gy.
LABi | Di | Uneg,i | Upos,i | |
---|---|---|---|---|
mGy/Gy |
mGy/Gy |
mGy/Gy |
||
LNE-LNHB | 0.7 | 4.0 | ||
NIST | -2.6 | 8.7 | ||
ENEA | -2.1 | 4.5 | ||
MKEH | -3.4 | 4.7 | ||
VNIIM | -0.7 | 5.3 | ||
VSL | 13.0 | 7.0 | ||
PTB | -0.6 | 4.9 | ||
BEV | -1.6 | 9.8 | ||
NMIJ | -2.6 | 6.5 | ||
CMI | 4.4 | 7.4 | ||
KRISS | -1.9 | 4.4 | ||
NPL | -9.6 | 4.9 | ||
NRC | 0.4 | 7.1 | ||
NIM | -3.2 | 7.7 | ||
GUM | 1.9 | 5.8 | ||
BFKH | 0.1 | 6.8 | ||
ARPANSA | -4.8 | 9.1 | ||
MNA | 37.0 | 14.0 | ||
BARC | 19.0 | 100.0 | ||
INER | 10.2 | 13.4 | ||
IAEA | 4.8 | 10.8 |
Metrology area, Sub-field | Ionizing Radiation, Section I (x and gamma rays, electrons) |
Description | Measurement of air-kerma rate for low energy X rays |
Time of measurements | 2008 - 2010 |
Status | Approved for equivalence |
Final Reports of the comparisons | |
References | |
Measurand | Air-kerma rate |
Parameters | Radiation type: X rays, 10 kV to 50 kV CCRI beam qualities and ISO beam qualities for W anode |
Transfer device | Transfer chambers |
Comparison type | Key Comparison |
Consultative Committee | CCRI (Consultative Committee for Ionizing Radiation) |
Conducted by | APMP (Asia Pacific Metrology Programme) |
Comments |
Results published on 03 September 2014 APMP.RI(I)-K2 results are linked to those of BIPM.RI(I)-K2 Measurement of air kerma for low energy x-rays
|
Pilot institute |
NMIJ AIST
National Metrology Institute of Japan Japan |
Contact person | Norio Saito +81 29 861 5666 |
Additional |
Pilot laboratory | |
---|---|
NMIJ AIST |
National Metrology Institute of Japan, Japan, APMP |
AECS-NRML |
Atomic Energy Commission of Syria, Syrian Arab Republic, APMP |
ARPANSA |
Australian Radiation Protection and Nuclear Safety Agency, Australia, APMP |
BARC |
Bhabha Atomic Research Centre, India, APMP |
IAEA |
International Atomic Energy Agency, IAEA - International Organization, SIM |
NIM |
National Institute of Metrology, China, APMP |
NRSL/INER |
Institute of Nuclear Energy Research, Chinese Taipei, APMP |
Nuclear Malaysia |
Malaysian Nuclear Agency, Malaysia, APMP |
OAP |
Office of Atoms for Peace, Thailand, APMP |
This page proposes print-out on A4 paper (portrait) of the comparison details (best printed out using a black and white printer).
Please, select items to be printed out, then click on "OK" :
BIPM.RI(I)-K2 and APMP.RI(I)-K2
MEASURAND Air kerma
Radiation quality 10 kV
For a comparison with laboratory i, the key comparison reference value is the BIPM air-kerma determination xR,i and its standard uncertainty uR,i.
The degree of equivalence of laboratory i with respect to xR,i is given by a pair of terms: Di and Ui = 2ui ,its expanded uncertainty (k = 2), both expressed in mGy/Gy. In evaluating ui for BIPM comparisons, account is taken ofcorrelation between uLab i and uR,i (see the BIPM.RI(I)-K2 Summary Report dated September 2003 or the relevant Final Report).For regional comparisons, additional linking uncertainties are included (see the APMP.RI(I)-K2 Final Report).
When required, the degree of equivalence between two laboratories i and j can be evaluated by a pair of terms:Dij = Di - Dj and Uij = 2uij , its expanded uncertainty (k = 2), both expressed in mGy/Gy. In evaluating uij , account should be taken of correlation between ui and uj (see the BIPM.RI(I)-K2 Summary Report dated September 2003). For regional comparisons involving secondary standards, this includes correlation related to traceability (see the APMP.RI(I)-K2 Final Report).
Linking APMP.RI(I)-K2 to BIPM.RI(I)-K2
The NMIJ/AIST (Japan) provides the link between the key comparison APMP.RI(I)-K2 and BIPM.RI(I)-K2, having participated in both comparisons. The linking process is described in Section 3 of the APMP.RI(I)-K2 Final Report.
BIPM.RI(I)-K2 and APMP.RI(I)-K2
MEASURAND Air kerma
Radiation quality 30 kV
For a comparison with laboratory i, the key comparison reference value is the BIPM air-kerma determination xR,i and its standard uncertainty uR,i.
The degree of equivalence of laboratory i with respect to xR,i is given by a pair of terms:
Di and Ui = 2ui ,its expanded uncertainty (k = 2), both expressed in mGy/Gy. In evaluating ui for BIPM comparisons, account is taken ofcorrelation between uLab i and uR,i (see the BIPM.RI(I)-K2 Summary Report dated September 2003 or the relevant Final Report). For regional comparisons, additional linking uncertainties are included (see the APMP.RI(I)-K2 Final Report).
When required, the degree of equivalence between two laboratories i and j can be evaluated by a pair of terms:
Dij = Di - Dj and Uij = 2uij , its expanded uncertainty (k = 2), both expressed in mGy/Gy. In evaluating uij , account should be taken of correlation between ui and uj (see the BIPM.RI(I)-K2 Summary Report dated September 2003). For regional comparisons involving secondary standards, this includes correlation related to traceability (see the APMP.RI(I)-K2 Final Report).
Linking APMP.RI(I)-K2 to BIPM.RI(I)-K2
The NMIJ/AIST (Japan) provides the link between the key comparison APMP.RI(I)-K2 and BIPM.RI(I)-K2, having participated in both comparisons. The linking process is described in Section 3 of the APMP.RI(I)-K2 Final Report.
BIPM.RI(I)-K2 and APMP.RI(I)-K2
MEASURAND Air kerma
Radiation quality 25 kV
For a comparison with laboratory i, the key comparison reference value is the BIPM air-kerma determination xR,i and its standard uncertainty uR,i.
The degree of equivalence of laboratory i with respect to xR,i is given by a pair of terms:
Di and Ui = 2ui ,its expanded uncertainty (k = 2), both expressed in mGy/Gy. In evaluating ui for BIPM comparisons, account is taken ofcorrelation between uLab i and uR,i (see the BIPM.RI(I)-K2 Summary Report dated September 2003 or the relevant Final Report). For regional comparisons, additional linking uncertainties are included (see the APMP.RI(I)-K2 Final Report).
When required, the degree of equivalence between two laboratories i and j can be evaluated by a pair of terms:
Dij = Di - Dj and Uij = 2uij , its expanded uncertainty (k = 2), both expressed in mGy/Gy. In evaluating uij , account should be taken of correlation between ui and uj (see the BIPM.RI(I)-K2 Summary Report dated September 2003). For regional comparisons involving secondary standards, this includes correlation related to traceability (see the APMP.RI(I)-K2 Final Report).
Linking APMP.RI(I)-K2 to BIPM.RI(I)-K2
The NMIJ/AIST (Japan) provides the link between the key comparison APMP.RI(I)-K2 and BIPM.RI(I)-K2, having participated in both comparisons. The linking process is described in Section 3 of the APMP.RI(I)-K2 Final Report.
BIPM.RI(I)-K2 and APMP.RI(I)-K2
MEASURAND Air kerma
Radiation quality 50 kVb
For a comparison with laboratory i, the key comparison reference value is the BIPM air-kerma determination xR,i and its standard uncertainty uR,i.
The degree of equivalence of laboratory i with respect to xR,i is given by a pair of terms:
Di and Ui = 2ui ,its expanded uncertainty (k = 2), both expressed in mGy/Gy. In evaluating ui for BIPM comparisons, account is taken ofcorrelation between uLab i and uR,i (see the BIPM.RI(I)-K2 Summary Report dated September 2003 or the relevant Final Report). For regional comparisons, additional linking uncertainties are included (see the APMP.RI(I)-K2 Final Report).
When required, the degree of equivalence between two laboratories i and j can be evaluated by a pair of terms:
Dij = Di - Dj and Uij = 2uij , its expanded uncertainty (k = 2), both expressed in mGy/Gy. In evaluating uij , account should be taken of correlation between ui and uj (see the BIPM.RI(I)-K2 Summary Report dated September 2003). For regional comparisons involving secondary standards, this includes correlation related to traceability (see the APMP.RI(I)-K2 Final Report).
Linking APMP.RI(I)-K2 to BIPM.RI(I)-K2
The NMIJ/AIST (Japan) provides the link between the key comparison APMP.RI(I)-K2 and BIPM.RI(I)-K2, having participated in both comparisons. The linking process is described in Section 3 of the APMP.RI(I)-K2 Final Report.
BIPM.RI(I)-K2 and APMP.RI(I)-K2
MEASURAND Air kerma
Radiation quality 50 kVa
For a comparison with laboratory i, the key comparison reference value is the BIPM air-kerma determination xR,i and its standard uncertainty uR,i.
The degree of equivalence of laboratory i with respect to xR,i is given by a pair of terms:
Di and Ui = 2ui ,its expanded uncertainty (k = 2), both expressed in mGy/Gy. In evaluating ui for BIPM comparisons, account is taken ofcorrelation between uLab i and uR,i (see the BIPM.RI(I)-K2 Summary Report dated September 2003 or the relevant Final Report). For regional comparisons, additional linking uncertainties are included (see the APMP.RI(I)-K2 Final Report).
When required, the degree of equivalence between two laboratories i and j can be evaluated by a pair of terms:
Dij = Di - Dj and Uij = 2uij , its expanded uncertainty (k = 2), both expressed in mGy/Gy. In evaluating uij , account should be taken of correlation between ui and uj (see the BIPM.RI(I)-K2 Summary Report dated September 2003). For regional comparisons involving secondary standards, this includes correlation related to traceability (see the APMP.RI(I)-K2 Final Report).
Linking APMP.RI(I)-K2 to BIPM.RI(I)-K2
The NMIJ/AIST (Japan) provides the link between the key comparison APMP.RI(I)-K2 and BIPM.RI(I)-K2, having participated in both comparisons. The linking process is described in Section 3 of the APMP.RI(I)-K2 Final Report.
BIPM.RI(I)-K2 and APMP.RI(I)-K2
MEASURAND Air kerma
Radiation quality 10 kV
BIPM.RI(I)-K2
uLab i relative standard uncertainty of air kerma determined by Lab i
xi air kerma determined by Lab i at the BIPM, relative to the reference value determined by the BIPM standard
ui combined standard uncertainty of xi taking correlation into account
Labi | uLab i | xi | ui | year of measurement |
LNE-LNHB | 0.0072 | 0.9992 | 0.0020 | 2009 |
ENEA | 0.0042 | 0.9978 | 0.0023 | 2011 |
MKEH | 0.0045 | 0.9973 | 0.0024 | 2011 |
VNIIM | 0.0040 | 0.9968 | 0.0027 | 2011 |
VSL | 0.0059 | 1.0078 | 0.0035 | 2012 |
PTB | 0.0042 | 1.0003 | 0.0025 | 2014 |
BEV | 0.0054 | 0.9980 | 0.0049 | 2014 |
NMIJ | 0.0045 | 1.0032 | 0.0032 | 2014 |
CMI | 0.0057 | 1.0055 | 0.0037 | 2015 |
KRISS | 0.0041 | 0.9984 | 0.0022 | 2017 |
NPL | 0.0068 | 0.9878 | 0.0024 | 2017 |
NRC | 0.0041 | 1.0003 | 0.0036 | 2018 |
NIM | 0.0046 | 0.9977 | 0.0039 | 2018 |
GUM | 0.0039 | 0.9941 | 0.0029 | 2021 |
ARPANSA | 0.0110 | 1.0112 | 0.0046 | 2022 |
APMP.RI(I)-K2
Measurement data are listed in Section 4 and Appendices of the APMP.RI(I)-K2 Final Report.
BIPM.RI(I)-K2 and APMP.RI(I)-K2
MEASURAND Air kerma
Radiation quality 30 kV
BIPM.RI(I)-K2
uLab i relative standard uncertainty of air kerma determined by Lab i
xi air kerma determined by Lab i at the BIPM, relative to the reference value determined by the BIPM standard
ui combined standard uncertainty of xi taking correlation into account
Labi | uLab i | xi | ui | year of measurement | ||
LNE-LNHB | 0.0041 | 1.0002 | 0.0020 | 2009 | ||
NIST | 0.0040 | 0.9969 | 0.0043 | 2010 | ||
ENEA | 0.0042 | 0.9968 | 0.0023 | 2011 | ||
MKEH | 0.0045 | 0.9975 | 0.0024 | 2011 | ||
VNIIM | 0.0040 | 0.9979 | 0.0027 | 2011 | ||
VSL | 0.0059 | 1.0069 | 0.0035 | 2012 | ||
PTB | 0.0042 | 0.9982 | 0.0025 | 2014 | ||
BEV | 0.0054 | 0.9992 | 0.0049 | 2014 | ||
NMIJ | 0.0045 | 1.0010 | 0.0032 | 2014 | ||
CMI | 0.0057 | 1.0039 | 0.0037 | 2015 | ||
KRISS | 0.0041 | 0.9976 | 0.0022 | 2017 | ||
NPL | 0.0068 | 0.9886 | 0.0024 | 2017 | ||
NRC | 0.0041 | 0.9976 | 0.0036 | 2018 | ||
NIM | 0.0046 | 0.9989 | 0.0039 | 2018 | ||
GUM | 0.0039 | 1.0052 | 0.0029 | 2021 | ||
BFKH | 0.0042 | 0.9957 | 0.0034 | 2021 | ||
ARPANSA | 0.0046 | 0.9924 | 0.0046 | 2022 |
APMP.RI(I)-K2
Measurement data are listed in Section 4 and Appendices of the APMP.RI(I)-K2 Final Report.
BIPM.RI(I)-K2 and APMP.RI(I)-K2
MEASURAND Air kerma
Radiation quality 25 kV
BIPM.RI(I)-K2
uLab i relative standard uncertainty of air kerma determined by Lab i
xi air kerma determined by Lab i at the BIPM, relative to the reference value determined by the BIPM standard
ui combined standard uncertainty of xi taking correlation into account
Labi | uLab i | xi | ui | year of measurement | |
LNE-LNHB | 0.0041 | 1.0007 | 0.0020 | 2009 | |
NIST | 0.0040 | 1.0000 | 0.0043 | 2010 | |
ENEA | 0.0042 | 0.9976 | 0.0023 | 2011 | |
MKEH | 0.0045 | 0.9988 | 0.0024 | 2011 | |
VNIIM | 0.0040 | 0.9978 | 0.0027 | 2011 | |
VSL | 0.0059 | 1.0075 | 0.0035 | 2012 | |
PTB | 0.0042 | 0.9979 | 0.0025 | 2014 | |
BEV | 0.0054 | 0.9987 | 0.0049 | 2014 | |
NMIJ | 0.0045 | 0.9977 | 0.0032 | 2014 | |
CMI | 0.0057 | 1.0045 | 0.0037 | 2015 | |
KRISS | 0.0041 | 0.9984 | 0.0022 | 2017 | |
NPL | 0.0068 | 0.9889 | 0.0024 | 2017 | |
NRC | 0.0041 | 0.9986 | 0.0036 | 2018 | |
NIM | 0.0046 | 1.0005 | 0.0039 | 2018 | |
GUM | 0.0039 | 1.0019 | 0.0029 | 2021 | |
BFKH | 0.0042 | 0.9960 | 0.0034 | 2021 |
APMP.RI(I)-K2
Measurement data are listed in Section 4 and Appendices of the APMP.RI(I)-K2 Final Report.
BIPM.RI(I)-K2 and APMP.RI(I)-K2
MEASURAND Air kerma
Radiation quality 50 kVb
BIPM.RI(I)-K2
uLab i relative standard uncertainty of air kerma determined by Lab i
xi air kerma determined by Lab i at the BIPM, relative to the reference value determined by the BIPM standard
ui combined standard uncertainty of xi taking correlation into account
Labi | uLab i | xi | ui | year of measurement | |||
LNE-LNHB | 0.0041 | 1.0001 | 0.0020 | 2009 | |||
NIST | 0.0040 | 1.0015 | 0.0043 | 2010 | |||
ENEA | 0.0042 | 0.9980 | 0.0023 | 2011 | |||
MKEH | 0.0045 | 0.9974 | 0.0024 | 2011 | |||
VNIIM | 0.0040 | 0.9987 | 0.0027 | 2011 | |||
VSL | 0.0059 | 1.0115 | 0.0035 | 2012 | |||
PTB | 0.0042 | 0.9989 | 0.0025 | 2014 | |||
BEV | 0.0054 | 0.9992 | 0.0049 | 2014 | |||
NMIJ | 0.0045 | 0.9991 | 0.0032 | 2014 | |||
CMI | 0.0057 | 1.0042 | 0.0037 | 2015 | |||
KRISS | 0.0041 | 0.9982 | 0.0022 | 2017 | |||
NPL | 0.0068 | 0.9899 | 0.0024 | 2017 | |||
NRC | 0.0041 | 1.0006 | 0.0036 | 2018 | |||
NIM | 0.0046 | 0.9975 | 0.0039 | 2018 | |||
GUM | 0.0039 | 1.0031 | 0.0029 | 2021 | |||
BFKH | 0.0042 | 0.9996 | 0.0034 | 2021 | |||
ARPANSA | 0.0046 | 0.9946 | 0.0046 | 2022 |
APMP.RI(I)-K2
Measurement data are listed in Section 4 and Appendices of the APMP.RI(I)-K2 Final Report.
BIPM.RI(I)-K2 and APMP.RI(I)-K2
MEASURAND Air kerma
Radiation quality 50 kVa
BIPM.RI(I)-K2
uLab i relative standard uncertainty of air kerma determined by Lab i
xi air kerma determined by Lab i at the BIPM, relative to the reference value determined by the BIPM standard
ui combined standard uncertainty of xi taking correlation into account
Labi | uLab i | xi | ui | year of measurement |
LNE-LNHB | 0.0041 | 1.0007 | 0.0020 | 2009 |
NIST | 0.0040 | 0.9974 | 0.0043 | 2010 |
ENEA | 0.0042 | 0.9979 | 0.0023 | 2011 |
MKEH | 0.0045 | 0.9966 | 0.0024 | 2011 |
VNIIM | 0.0040 | 0.9993 | 0.0027 | 2011 |
VSL | 0.0059 | 1.0130 | 0.0035 | 2012 |
PTB | 0.0042 | 0.9994 | 0.0025 | 2014 |
BEV | 0.0054 | 0.9984 | 0.0049 | 2014 |
NMIJ | 0.0045 | 0.9974 | 0.0032 | 2014 |
CMI | 0.0057 | 1.0044 | 0.0037 | 2015 |
KRISS | 0.0041 | 0.9981 | 0.0022 | 2017 |
NPL | 0.0068 | 0.9904 | 0.0024 | 2017 |
NRC | 0.0041 | 1.0004 | 0.0036 | 2018 |
NIM | 0.0046 | 0.9968 | 0.0039 | 2018 |
GUM | 0.0039 | 1.0019 | 0.0029 | 2021 |
BFKH | 0.0042 | 1.0019 | 0.0034 | 2021 |
ARPANSA | 0.0046 | 0.9952 | 0.0046 | 2022 |
APMP.RI(I)-K2
Measurement data are listed in Section 4 and Appendices of the APMP.RI(I)-K2 Final Report.