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Calibration and characterization certificates: Ionizing Radiation

For other services offered by the BIPM, please refer to the summary charts for chemistry, electricity, ionizing radiation, mass and time.
2017
No. 7 Ionization chamber PTW TM 34069, No. 163, in mammography x-rays IST, Portugal
No. 2 Ionization chamber PTW TM30001, No. 1576, in a 60Co gamma-ray beam IST, Portugal

2016
No. 79 Ionization chamber NE 2571, No. 2676, in a 60Co gamma-ray beam GUM, Poland
No. 78 Ionization chamber Exradin A6, No. XQ040063, in gamma-ray beams SSM, Sweden
No. 77 Ionization chamber PTW 30010, No. 132, in low-energy x-rays NMISA, South Africa
No. 76 Ionization chamber PTW 30010, No. 132, in medium-energy x-rays NMISA, South Africa
No. 75 Ionization chamber PTW 30010, No. 132, in a 60Co gamma-ray beam NMISA, South Africa
No. 28 Ionization chamber FC65-G, No. 3360, in a 60Co gamma-ray beam STUK, Finland
No. 27 Ionization chamber FC65-G, No. 3360, in medium-energy x-rays STUK, Finland
No. 26 Ionization chamber PTW30013, No. 1452, in a 60Co gamma-ray beam SMU, Slovakia
No. 25 Ionization chamber Thermo 2571, No. 2571, in a 60Co gamma-ray beam SMU, Slovakia
No. 21 Ionization chamber NE 2611A, No. 211, in a 60Co gamma-ray beam IAEA
No. 20 Ionization chamber TEC/NPL 2611B, No. 242, in a 60Co gamma-ray beam IAEA
No. 19 Ionization chamber NE 2561, No. 265, in medium-energy x-rays IAEA
No. 18 Ionization chamber NE 2611A, No. 145, in medium-energy x-rays IAEA
No. 17 Ionization chamber PTW 23344, No. 0957, in low-energy x-rays IAEA
No. 16 Ionization chamber PTW 23344, No. 0844 in low-energy x-rays IAEA
No. 15 Ionization chamber PTW W32002, No. 055, in 137Cs gamma-ray beam NMISA, South Africa
No. 14 Ionization chamber NE 2530, No. 643, in 137Cs gamma-ray beam NMISA, South Africa
No. 3 Ionization chamber FC65G, No. 935, in 60Co gamma-ray beam CIEMAT, Spain
No. 2 Ionization chamber PTW TN31010, No. 2163, in 60Co gamma-ray beam KRISS, Korea (Republic of)
No. 1 Ionization chamber PTW TN30013, No. 8979, in 60Co gamma-ray beam KRISS, Korea (Republic of)

2015
No. 100 Ionization chamber PTW 23342, No. 1391, in low-energy x-rays IRCL, Greece
No. 99 Ionization chamber FC65-G, No. 634, in medium-energy x-rays IRCL, Greece
No. 98 Ionization chamber FC65-G, No. 634, in a 60Co gamma-ray beam IRCL, Greece
No. 97 Ionization chamber NE 2571, No. 3526 in a 60Co gamma-ray beam CIEMAT, Spain
No. 96 Ionization chamber Shonka, No. 346 in a 60Co gamma-ray beam CIEMAT, Spain
No. 94 Ionization chamber NE 2530, No. 699 in gamma-ray beams CRRD, Argentina
No. 93 Ionization chamber NE 2575, No. 467 in gamma-ray beams CRRD, Argentina
No. 63 Ionization chamber Radcal 4001-1020703, No. 9060 in mammography x-rays IAEA
No. 62 Ionization chamber Radcal 4001-1020703, No. 9059 in mammography x-rays IAEA
No. 14 Ionization chamber NE 2611A, No. 176 in a 60Co gamma-ray beam ININ, Mexico
No. 13 Ionization chamber Exradin A12, No. 71931 in a 60Co gamma-ray beam ININ, Mexico

2014
No. 76 Ionization chamber NE 2561, No. 097 in a 60Co gamma-ray beam STUK, Finland
No. 75 Ionization chamber NE 2561, No. 097 in medium-energy x-rays STUK, Finland
No. 74 Ionization chamber PTW 23344, No. 620, in mammography x-rays STUK, Finland
No. 73 Ionization chamber PTW 23344, No. 620 in low-energy x-rays STUK, Finland
No. 51 Ionization chamber Exradin A6, No. XQ090164 in gamma-ray beams IAEA
No. 50 Ionization chamber LS10, No. 130 in gamma-ray beams IAEA
No. 49 Ionization chamber HS01, No. 102 in gamma-ray beams IEAE
No. 48 Ionization chamber LS01, No. 115 in gamma-ray beams IAEA
No. 38 Ionization chamber PTW 32002, No. 0220 in a 137Cs gamma-ray beam ENEA-INMRI, Italy

2013
No. 77 Ionization chamber NE 2561, No. 264 in a 60Co gamma-ray beam LNMRI, Brazil
No. 76 Ionization chamber NE 2561, No. 264 in medium-energy x-rays LNMRI, Brazil
No. 75 Ionization chamber NE 2561, No. 168 in a 60Co gammar-ray beam LNMRI, Brazil
No. 74 Ionization chamber NE 2561, No. 168 in medium-energy x-rays LNMRI, Brazil
No. 67 Ionization chamber NE 2611A, No. 211 in a 60Co gamma-ray beam IAEA
No. 66 Ionization chamber TEC/NPL 2611B, No. 242 in a 60Co gamma-ray beam IAEA
No. 65 Ionization chamber FC65G, No. 1551 in a 60Co gamma-ray beam IAEA
No. 64 Ionization chamber NE 2561, No. 265 in medium-energy x-ray IAEA
No. 63 Ionization chamber NE 2611, No . 145 in medium-energy x-rays IAEA
No. 62 Ionization chamber PTW 23344, No. 0957 in low-energy x-rays IAEA
No. 61 Ionization chamber PTW 23344, No. 0844 in low-energy x-rays IAEA
No. 59 Ionization chamber Exradin A6, No. XQ102232 in gamma-ray beam NRPA, Norway
No. 58 Ionization chamber NE 2561, No. 099 in a 60Co gamma-ray beam NRPA, Norway
No. 57 Ionization chamber NE 2561, No. 099 in medium-energy x-rays NRPA, Norway
No. 56 Ionization chamber Capintec PR-06G, No. 8429 in a 60Co gamma-ray beam NRPA, Norway
No. 55 Ionization chamber Capintec PR-06G, No. 8429 in medium-energy x-rays NRPA, Norway
No. 54 Ionization chamber Radcal RC6M, No. 9065 in mammography x-rays NRPA, Norway
No. 53 Ionization chamber Radcal RC6M, No. 9065 in low-energy x-rays NRPA, Norway
No. 52 Ionization chamber NE 2571, No. 2676 in a 60Co gamma-ray beam GUM, Poland
No. 19 Ionization chamber NE 2611, No. 133 in medium-energy x-rays CRRD, Argentina
No. 18 Ionization chamber NE 2611, No. 2611 in a 60Co gamma-ray beam CRRD, Argentina
No. 17 Ionization chamber PTW W32002, No. 055 in gamma-ray beams NMIMSA, South Africa
No. 16 Ionization chamber NE 2530, No. 649 in a 137Cs gamma-ray beam NMISA, South Africa
No. 15 Ionization chamber PTW 30012, No. 0064 in x-rays beams NMISA, South Africa
No. 14 Ionization chamber PTW 30012, No. 0064 in a 60Co gamma-ray beam NMISA, South Africa
No. 13 Ionization chamber NE 2571, No. 2719 in x-rays beams NMISA, South Africa
No. 12 Ionization chamber NE 2571, No. 2719 in a 60Co gamma-ray beam NMISA, South Africa

2012
No. 69 Ionization chamber Exradin A4, No. 231 in gamma-ray beam SSM, Sweden
No. 68 Ionization chamber NE 2571, No. 2061 in a 60Co gamma-ray beam SSM, Sweden
No. 67 Ionization chamber NE 2571, No. 2597 in a 60Co gamma-ray beam SSM, Sweden
No. 66 Ionization chamber Exradin A3, No. 169 in medium-energy x-rays SSM, Sweden
No. 65 Ionization chamber Radcal 10X5-6M, No. 8302 in low-energy x-rays SSM, Sweden
No. 47 Ionization chamber NE 2571, No. NE 2571 in a 60Co gamma-ray beam CMI, Czech Republic
No. 46 Ionization chamber PTW TW30001, No. 2229 in a 60Co gamma-ray beam KRISS, Korea (Republic of)
No. 45 Ionization chamber PTW TN31010, No. 2163 in a 60Co gamma-ray beam KRISS, Korea (Republic of)
No. 38 Ionization chamber ND 1001, No. 7814 in gamma-ray beams BIM, Bulgaria
No. 37 Ionization chamber Radcal RC6M, No. 9113 in low-energy x-rays CMI, Czech Republic
No. 36 Ionization chamber Radcal RC6M, No. 9113 in mammography x-rays CMI, Czech Republic
No. 35 Ionization chamber Exradin A4, No. 169 in medium-energy x-rays CMI, Czech Republic
No. 34 Ionization chamber Exradin A4, No. 169 in gamma-ray beams CMI, Czech Republic
No. 33 Ionization chamber Exradin A3-92717, No. XR072954 in medium-energy x-rays ININ, Mexico
No. 32 Ionization chamber Radcal RC6M, No. 10111 in low-energy x-rays ININ, Mexico
No. 31 Ionization chamber Radcal RC6M, No. 10111 in mammography x-rays ININ, Mexico
No. 29 Ionization chamber NE 2611, No. 129 in a 60Co gamma-ray beam METAS, Switzerland
No. 22 Ionization chamber PTW 23343, No. 2862 in low-energy x-rays NIS, Egypt
No. 21 Ionization chamber PTW 23342, No. 1250 in low-energy x-rays NIS, Egypt
No. 20 Ionization chamber PTW 30013, No. 2016 in medium-energy x-rays NIS, Egypt
No. 19 Ionization chamber NE 2530, No. 424 in a 137Cs gamma-ray beam NIS, Egypt
No. 18 Ionization chamber NE 2561, No. 229 in a 60Co gamma-ray beam NIS, Egypt
No. 17 Ionization chamber PTW 30013, No. 2016 in a 60Co gamma-ray beam NIS, Egypt

2011
No. 100 Ionization chamber NE 2571, No. 2676 in a 60Co gamma-ray beam GUM, Poland
No. 69 Ionization chamber PTW TW 30001, No. 2123 in a 60Co gamma-ray beam BARC, India
No. 68 Ionization chamber FC65G, No. 1300 in a 60Co gamma-ray beam BARC, India
No. 67 Ionization chamber NE 2571, No. 1692 in a 60Co gamma-ray beam BARC, India
No. 66 Ionization chamber NE 2575, No. 467 in gamma-ray beams CRRD, Argentina
No. 65 Ionization chamber PTW TN 32002, No. 277 in gamma-ray beams IAEA
No. 64 Ionization chamber LS10, No. 130 in gamma-ray beams IAEA
No. 63 Ionization chamber HS01, No. 102 in gamma-ray beams IAEA
No. 62 Ionization chamber LS01, No. 115 in gamma-ray beams IAEA
No. 56 Ionization chamber PTW TM 30001, No. 1576 in a 60Co gamma-ray beam ITN, Portugal
No. 55 Ionization chamber PTW TM 34069, No. 163 in mammography x-rays ITN, Portugal
No. 54 Ionization chamber NE 2571, No. 3108 in a 60Co gamma-ray beam HIRCL, Greece
No. 53 Ionization chamber NE 2571, No. 3108 in medium-energy x-rays HIRCL, Greece
No. 52 Ionization chamber Magna 92650, No. D011271 in mammography x-rays HIRCL, Greece
No. 22 Ionization chamber NE 2571, No. 2690 in a 60Co gamma-ray beam METAS, Switzerland
No. 21 Ionization chamber NE 2611, No. 130 in a 60Co gamma-ray beam METAS, Switzerland

2010
No. 62 Ionization chamber NE 2571, No. 3526 in a 60Co gamma-ray beam CIEMAT, Spain
No. 61 Ionization chamber Shonka, No. 346 in a 60Co gamma-ray beam CIEMAT, Spain
No. 38 Ionization chamber TEC/NPL 2611B, No. 242 in a 60Co gamma-ray beam IAEA
No. 37 Ionization chamber NE 2611A, No. 211 in a 60Co gamma-ray beam IAEA
No. 36 Ionization chamber NE 2651, No. 265 in medium-energy x-rays IAEA
No. 35 Ionization chamber NE 2611, No. 145 in medium-energy x-rays IAEA
No. 34 Ionization chamber PTW 23344, No. 0844 in low-energy x-rays IAEA
No. 33 Ionization chamber PTW 23342, No. 1128 in low-energy x-rays IAEA
No. 15 Ionization chamber PTW 30012, No. 163 in a 60Co gamma-ray beam NIM, China
No. 14 Ionization chamber PTW 30010, No. 2369 in a 60Co gamma-ray beam NIM, China
No. 13 Ionization chamber NE 2571, No. 708 in a60Co gamma-ray beam NIM, China
No. 12 Ionization chamber Radcal RC6M, No. 9066 in mammography x-rays NIM, China
No. 11 Ionization chamber Radcal RC6M, No. 9066 in low-energy x-rays NIM, China
No. 10 Ionization chamber PTW 23344, No. 620 in low-energy x-rays STUK, Finland
No. 9 Ionization chamber NE 2561, No. 097 in medium-energy x-rays STUK, Finland
No. 8 Ionization chamber NE 2561, No. 097 in a 60Co gamma-ray beam STUK, Finland
No. 7 Ionization chamber NE 2530, No. 649 in gamma-ray beams NMISA, South Africa
No. 6 Ionization chamber PTW 30012, No. 0064 in a 60Co gamma-ray beam NMISA, South Africa
No. 5 Ionization chamber PTW 30012, No. 0064 in x-ray beams NMISA, South Africa
No. 4 Ionization chamber NE 2571, No. 2719 in a 60Co gamma-ray beam NMISA, South Africa
No. 3 Ionization chamber NE 2571, No. 2719 in x-ray beams NMISA, South Africa

2009
No. 63 Ionization chamber NE 2575, No. 116 in gamma-ray beams NRPA, Norway
No. 62 Ionization chamber Exradin A3, No. 229 in gamma-ray beams NRPA, Norway
No. 16 Ionization chamber NE 2561, No. 099 in a 60Co gamma-ray beam NRPA, Norway
No. 15 Ionization chamber Capintec PR-06G, No. 8429 in a 60Co gamma-ray beam NRPA, Norway
No. 14 Ionization chamber Capintec PR-06G, No. 8429 in medium-energy x-rays NRPA, Norway
No. 13 Ionization chamber Radcal RC6M, No. 9065 in low-energy x-rays NRPA, Norway
No. 12 Ionization chamber NE 2611A, No. 133 in a 60Co gamma-ray beam CRRD, Argentina
No. 11 Ionization chamber NE 2611, No. 133 in medium-energy x-rays CRRD, Argentina
No. 3 Ionization chamber NE 2561, No. 264 in medium-energy x-rays LNMRI, Brazil
No. 2 Ionization chamber NE 2561, No. 264 in a 60Co gamma-ray beam LNMRI, Brazil

2008
No. 46 Ionization chamber LS10, No. 130 in gamma-ray beams IAEA
No. 45 Ionization chamber HS01, No. 102 in gamma-ray beams IAEA
No. 44 Ionization chamber LS01, No. 115 in gamma-ray beams IAEA
No. 34 Ionization chamber NE 2571, No. 3108 in a 60Co gamma-ray beam HIRCL, Greece
No. 33 Ionization chamber NE 2571, No. 3108 in medium-energy x-rays HIRCL, Greece
No. 20 Ionization chamber Exradin A4, No. 231 in gamma-ray beams SRPA, Sweden
No. 19 Ionization chamber NE 2571, No. 2597 in a 60Co gamma-ray beam SRPA, Sweden
No. 18 Ionization chamber NE 2571, No. 2061 in a 60Co gamma-ray beam SRPA, Sweden
No. 17 Ionization chamber Exradin A3, No. 189 in medium-energy x-rays SRPA, Sweden
No. 16 Ionization chamber Exradin A3, No. 169 in medium-energy x-rays SRPA, Sweden
No. 15 Ionization chamber Radcal 10X5-6M, No. 9200 in low-energy x-rays SRPA, Sweden
No. 14 Ionization chamber Radcal 10X5-6M, No. 8302 in low-energy x-rays SRPA, Sweden
No. 13 Ionization chamber NE 2530, No. 538 in gamma-ray beams ININ, Mexico
No. 12 Ionization chamber NE 2611A, No. 176 in a 60Co gamma-ray beam ININ, Mexico
No. 11 Ionization chamber Exradin A12, No. 71931 in a 60Co gamma-ray beam ININ, Mexico

2007
No. 81 Ionization chamber in x-rays, No. 0064 NMISA, South Africa
No. 80 Ionization chamber in 60Co gamma-ray beams, No. 0064 NMISA, South Africa
No. 79 Ionization chamber in x-rays, NE 2571 2719 NMISA, South Africa
No. 78 Ionization chamber in 60Co gamma-ray beams, NE 2571 2719 NMISA, South Africa
No. 75 Ionization chamber in 60Co gamma-ray beams, NE 2561-168 LNMRI, Brazil
No. 74 Ionization chamber in medium-energy x-rays, No. 168 LNMRI, Brazil
No. 57 Ionization chamber in 60Co gamma-ray beam, No. NE 2571 CMI, Czech Republic
No. 54 Ionization chamber in medium-energy x-rays, No. 145 IAEA
No. 53 Ionization chamber in medium-energy x-rays, No. 265 IAEA
No. 52 Ionization chamber in low-energy x-rays, No. 0844 IAEA
No. 51 Ionization chamber in low-energy x-rays, No. 1128 IAEA
No. 50 Ionization chamber in 60Co gamma-ray beam, No. 132 IAEA
No. 49 Ionization chamber in 60Co gamma-ray beam, No. 211 IAEA
No. 19 Ionization chamber in gamma-ray beams, No. 467 CRRD, Argentina
No. 18 Ionization chamber in low-energy x-rays, No. 1250 NIS, Egypt
No. 17 Ionization chamber in medium-energy x-rays, No. 2016 NIS, Egypt
No. 16 Ionization chamber in gamma-ray beams, No 2016 NIS, Egypt
No. 15 Ionization chamber in medium-energy x-rays, No.229 NIS, Egypt
No. 14 Ionization chamber in gamma-ray beams, No. 229 NIS, Egypt

2006
No. 50 Ionization chamber in medium-energy x-rays, No. 3170 LNE, France
No. 49 Ionization chamber in medium-energy x-rays, No. 3169 LNE, France
No. 48 Ionization chamber in 60Co gamma-ray beam, No. 261 KRISS, Korea (Republic of)
No. 25 Ionization chamber in 60Co gamma-ray beam, 2690 METAS, Switzerland
No. 24 Ionization chamber in 60Co gamma-ray beam, 130 METAS, Switzerland

2005
No. 55 Ionization chamber in 137Cs and 60Co gamma-ray beams, LS10 130 IAEA
No. 50 Ionization chamber in 60Co gamma-ray beam, PTW TM30001 1576 ITN, Portugal
No. 49 Ionization chamber in medium-energy x-rays, NE2571 2394 CRRD, Argentina
No. 48 Ionization chamber in 60Co gamma-ray beam, NE2571 2394 CRRD, Argentina
No. 47 Ionization chamber in medium-energy x-rays, NE2611 133 CRRD, Argentina
No. 46 Ionization chamber in 60Co gamma-ray beam, NE2611A 133 CRRD, Argentina
No. 45 Ionization chamber in 137Cs and 60Co gamma-ray beam, HS01 102 IAEA
No. 44 Ionization chamber in 137Cs and 60Co gamma-ray beam, LS01 115 IAEA
No. 29 Ionization chamber in a 60Co gamma-ray beam, NE 2611-144 CSIR-NML, South Africa
No. 28 Ionization chamber in x-rays, NE 2611-144 CSIR-NML, South Africa
No. 27 Ionization chamber in gamma-ray beams, NE 2530-649 CSIR-NML, South Africa

2004
No. 78 Ionization chamber in medium-energy x-rays, NE 2571-3169 BNM-LNHB, France
No. 70 Ionization chamber in medium-energy x-rays, NE 2561-265 IAEA
No. 61 Ionization chamber in 60Co gamma-ray beam, NE 2611A-211 IAEA
No. 60 Ionization chamber in 60Co gamma-ray beam, NE 2611A-132 IAEA
No. 59 Ionization chamber in 60Co gamma-ray beam, NE 2561-265 IAEA
No. 58 Ionization chamber in low-energy x-rays, PTW 23342-1128 IAEA
No. 36 Ionization chamber in gamma-ray beams, Exradin A3-229 NRPA, Norway
No. 35 Ionization chamber in 60Co gamma-ray beam, NE 2561-099 NRPA, Norway
No. 34 Ionization chamber in 60Co gamma-ray beam, Capintec PR-06G-8429 NRPA, Norway
No. 33 Ionization chamber in medium-energy x-rays, Capintec PR-06G-8429 NRPA, Norway
No. 32 Ionization chamber in low-energy x-rays, NE 2536/3-17786 NRPA, Norway
No. 31 Ionization chamber in low-energy x-rays, Radcal RC6M-9065 NRPA, Norway
No. 27 Ionization chamber in 60Co gamma-ray beam, NE 2571-3125 CIEMAT, Spain
No. 26 Ionization chamber in medium-energy x-rays, NE 2571-3125 CIEMAT, Spain
No. 25 Ionization chamber in 60Co gamma-ray beam, Shonka-416 CIEMAT, Spain
No. 24 Ionization chamber in 137Cs gamma-ray beam, Shonka-413 CIEMAT, Spain
No. 23 Ionization chamber in 60Co gamma-ray beam, Shonka-346 CIEMAT, Spain
No. 16 Ionization chamber in 60Co gamma-ray beam, NE 2561-097 STUK, Finland
No. 15 Ionization chamber in medium-energy x-rays, NE 2561-097 STUK, Finland
No. 14 Ionization chamber in low-energy x-rays, NE 2536/3-R17827 STUK, Finland
No. 13 Ionization chamber in low-energy x-rays, PTW 23344-620 STUK, Finland

2003
No. 79 Ionization chamber in 60Co gamma-ray beam, NE2571-3108 HIRCL, Greece
No. 71 Ionization chamber in 60Co gamma-ray beam, NE 2561-082 KFDA, Korea (Republic of)
No. 67 Ionization chamber in gamma-ray beams, Exradin A3-22482 HIRCL, Greece
No. 60 Ionization chamber in gamma-ray beams, NE 2575-467 CRRD, Argentina
No. 59 Ionization chamber in 60Co gamma-ray beam, LS 01-115 IAEA
No. 58 Ionization chamber in 60Co gamma-ray beam, HS 01-102 IAEA
No. 47 Ionization chamber in gamma-ray beams, Exradin A4-231 SRPA, Sweden
No. 46 Ionization chamber in 60Co gamma-ray beam, NE 2571-2061 SRPA, Sweden
No. 45 Ionization chamber in 60Co gamma-ray beam, NE 2561-056 SRPA, Sweden
No. 44 Ionization chamber in medium-energy x-rays, Exradin A3-189 SRPA, Sweden
No. 43 Ionization chamber in medium-energy x-rays, Exradin A3-169 SRPA, Sweden
No. 42 Ionization chamber in low-energy x-rays, Radcal 10X5-6M-8302 SRPA, Sweden
No. 41 Ionization chamber in low-energy x-rays, PTW23344-17918 SRPA, Sweden
No. 6 Ionization chamber in 60Co gamma-ray beam, CC01-110 LNMRI/IRD, Brazil

2002
No. 91 Ionizing chamber in 137Cs gamma-ray beam, LS 01-115 IAEA
No. 84 Ionization chamber in 137Cs gamma-ray beam, HS 01-102 IAEA
No. 83 Ionization chamber in 137Cs gamma-ray beam, LS 01-115 IAEA
No. 82 Ionization chamber in medium-energy x-rays, NE 2561-265 IAEA
No. 81 Ionization chamber in low-energy x-rays, PTW 23344-0858 ARPANSA, Australia
No. 80 Ionization chamber in low-energy x-rays, transfer standard ARPANSA, Australia
No. 77 Ionization chamber in 137Cs gamma-ray beam, NE 2611A-144 CSIR-NML, South Africa
No. 76 Ionization chamber in 60Co gamma-ray beam, NE 2611A-144 CSIR-NML, South Africa
No. 75 Ionization chamber in x-rays, NE 2611A-144 CSIR-NML, South Africa
No. 66 Ionization chamber in medium-energy x-rays, NE 2571-3169 BNM-LNHB, France
No. 64 Ionization chamber in medium-energy x-rays, NE 2571-3170 BNM-LNHB, France
No. 63 Ionization chamber in low-energy x-rays, PTW M23344-713 ENEA-INMRI, Italy
No. 62 Ionization chamber in low-energy x-rays, PTW M23344-232 ENEA-INMRI, Italy
No. 61 Ionization chamber in medium-energy x-rays, FZS TK 30-110 ENEA-INMRI, Italy
No. 60 Ionization chamber in medium-energy x-rays, FZS TK 30-112 ENEA-INMRI, Italy
No. 59 Ionization chamber in medium-energy x-rays, Exradin A4-218 ENEA-INMRI, Italy
No. 58 Ionization chamber in medium-energy x-rays, PTW M23361-138 ENEA-INMRI, Italy
No. 33 Ionization chamber in medium-energy x-rays, NE 2571-2394 CRRD, Argentina
No. 32 Ionization chamber in 60Co gamma-ray beam, NE 2571-2394 CRRD, Argentina
No. 31 Ionization chamber in medium-energy x-rays, NE 2611A-133 CRRD, Argentina
No. 30 Ionization chamber in 60Co gamma-ray beam, NE 2611A-133 CRRD, Argentina
No. 29 Ionization chamber in 60Co gamma-ray beam, NE 2561-84 OMH, Hungary
No. 27 Ionization chamber in low-energy x-rays, Radcal 10X5-6M-8468 LNMRI, Brazil
No. 26 Ionization chamber in medium-energy x-rays, Exradin A2-157 LNMRI, Brazil
No. 25 Ionization chamber in medium-energy x-rays, NE 2561-264 LNMRI, Brazil
No. 24 Ionization chamber in 60Co gamma-ray beam, NE 2561-264 LNMRI, Brazil
No. 23 Ionization chamber in medium-energy x-rays, NE 2571-261 KRISS, Korea (Republic of)
No. 22 Ionization chamber in gamma-ray beams, Exradin A4-346 KRISS, Korea (Republic of)
No. 21 Ionization chamber in 60Co gamma-ray beam, NE 2561-82 KFDA, Korea (Republic of)
No. 18 Ionization chamber in 60Co gamma-ray beam, PTW 23343-2862 NIS, Egypt
No. 17 Ionization chamber in 60Co gamma-ray beam, NE 2571-1262 NIS, Egypt
No. 16 Ionization chamber in 60Co gamma-ray beam, NE 2561-229 NIS, Egypt
No. 15 Ionization chamber in medium-energy x-rays, NE 2571-1262 NIS, Egypt
No. 14 Ionization chamber in medium-energy x-rays, NE 2561-229 NIS, Egypt
No. 5 Ionization chamber in 137Cs gamma-ray beam, ND 1000-7711 NCM, Bulgaria
No. 4 Ionization chamber in x-rays, ND 1002-7814 NCM, Bulgaria
No. 3 Ionization chamber in x-rays, ND 1001-7814 NCM, Bulgaria
No. 2 Ionization chamber in gamma-ray beams, ND 1001-7814 NCM, Bulgaria

2001
No. 86 Ionization chamber in 60Co gamma-ray beam, ND 1006-8508 SZMDM, Serbia
No. 85 Ionization chamber in medium-energy x-rays, ND 1006-8508 SZMDM, Serbia
No. 54 Ionization chamber in 60Co gamma-ray beam, NE 2571-3108 HIRCL, Greece
No. 43 Ionization chamber in 137Cs gamma-ray beam, Exradin A4-231 SRPI, Sweden
No. 42 Ionization chamber in 137Cs gamma-ray beam, Exradin A4-119 SRPI, Sweden
No. 25 Ionization chamber in 137Cs gamma-ray beam, LS 01-115 IAEA
No. 24 Ionization chamber in 60Co gamma-ray beam, NE 2561-321 IAEA
No. 23 Ionization chamber in 60Co gamma-ray beam, NE 2561-265 IAEA
No. 22 Ionization chamber in low-energy x-rays, PTW 23342-1128 IAEA
No. 21 Ionization chamber in low-energy x-rays, PTW 23344-089 LNMRI, Brazil
No. 16 Ionization chamber in gamma-ray beams, NE 2561-168 LNMRI, Brazil

2000
No. 11 Ionization chamber in gamma-ray beams, Shonka 346 CIEMAT, Spain
No. 10 Ionization chamber in gamma-ray beams, Shonka 413 CIEMAT, Spain

Study Notes
2013
No. 3 Ionization chamber NE 2611, No. 213 in a 60Co gamma-ray beam CRRD, Argentina

2011
No. 3 Ionization chamber PTW TW 30001, No. 2123 in a 60Co gamma-ray beam BARC, India

2009
No. 3 Ionization chamber NE 2536/3, No. 17786 in low-energy x-rays NRPA, Norway

2003
No. 5 Ionization chamber in medium-energy x-rays, NE 2577-239 BNM-LNHB, France
Traceability to the SI through the BIPM
Subject area:
What is traceability?
BIPM policy on stating uncertainties
Provision of BIPM technical services per Member State
Chemistry
Electricity
Ionizing Radiation
Mass
Time
Related articles
BIPM calibration and measurement services
Comparisons piloted by the BIPM