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Calibration and characterization certificates: Mass

For other services offered by the BIPM, please refer to the summary charts for chemistry, electricity, ionizing radiation, mass and time.
2018
No. 11 1 kg mass standard, No. 33 DMDM, Serbia
No. 10 1 kg mass standard, No. P120684 HMI, Croatia
No. 9 1 kg mass standard, No. P0296 HMI, Croatia
No. 8 1 kg mass standard, No. 013504/00 EIM, Greece
No. 7 1 kg mass standard, No. 013501/00 EIM, Greece
No. 6 1 kg mass standard, No. 112492 RCM-LIPI, Indonesia
No. 5 1 kg mass standard, No. 75 RCM-LIPI, Indonesia
No. 4 1 kg mass standard, No. 74 RCM-LIPI, Indonesia
No. 3 1 kg mass standard, No. 1950507 LATU, Uruguay
No. 2 1 kg mass standard, No. ID142131 EMI, United Arab Emirates
No. 1 1 kg mass standard, No. ID142130 EMI, United Arab Emirates

 2017
No. 48 1 kg mass prototype, No. 54 UME, Turkey
No. 47 1 kg mass prototype, No. 107 NPSL, Pakistan
No. 46 1 kg mass prototype, No. 111 KRISS, Korea (Republic of)
No. 45 1 kg mass prototype, No. 72 KRISS, Korea (Republic of)
No. 1 1 kg mass prototype, No. 75 SCL, Hong Kong (China)

 2016
No. 74 1 kg mass prototype, No. 110 China
No. 73 1 kg mass standard, "LM-043" MIRS, Slovenia
No. 72 1 kg mass standard, "LM-042" MIRS, Slovenia
No. 71 1 kg mass standard, "LM-040" MIRS, Slovenia
No. 70 1 kg mass standard, "NSCCL" CESMEC, Chile
No. 69 1 kg mass standard, "4S2" VSL, Netherlands
No. 68 1 kg mass standard, "3S2" VSL, Netherlands
No. 67 1 kg mass standard in Nicral D, "71" NMCI, Iran (Islamic Republic of)
No. 66 1 kg mass prototype, No. 55 Germany

 2015
No. 131 1 kg mass standard in "Immaculate V", E'69 NSAI NML, Ireland
No. 130 1 kg mass standard in platinum-iridium, "B" NPL, United Kingdom
No. 129 1 kg mass standard, 4S2 VSL, Netherlands
No. 128 1 kg mass standard, 3S2 VSL, Netherlands
No. 127 1 kg mass prototype, No. 108 Colombia
No. 126 1 kg mass prototype, No. 76 Italy
No. 125 1 kg mass prototype, No. 48 Denmark
No. 124 1 kg mass prototype, No. 64 China
No. 123 1 kg mass standards, E0 NIMT, Thailand
No. 122 1 kg mass prototype, No. 80 Thailand
No. 121 1 kg mass prototype, No. 24 Spain
No. 84 1 kg mass standard in stainless steel, T3 INPL, Israel
No. 83 1 kg mass prototype, No. 71 Israel
No. 82 1 kg mass prototype, No. 46 Indonesia
No. 81 1 kg mass standard in stainless steel, 01-0706 LATU, Uruguay
No. 80 1 kg mass standard in stainless steel, KZ3 KazInMetr, Kazakhstan
No. 79 1 kg mass standard in stainless steel, KZ2 KazInMetr, Kazakhstan
No. 78 1 kg mass standard in stainless steel, KZ1 KazIMetr, Kazakhstan
No. 77 1 kg mass prototype, No. 56 South Africa
No. 76 1 kg mass prototype, No. 78 CMI, Chinese Taipei
No. 75 1 kg mass prototype, No. 93 Saudi Arabia
No. 74 Prototype de masse, No. 35 France
No. 73 1 kg mass prototype, No. 89 Switzerland
No. 72 1 kg mass standard in stainless steel, No. 11116701 BIM, Bulgaria
No. 71 1 kg mass standard in platinum-iridium, "A" NPL, United Kingdom
No. 70 1 kg mass prototype, No. 44 Australia
No. 69 1 kg mass standard, 4S2 VSL, Netherlands
No. 68 1 kg mass standard, 3S2 VSL, Netherlands
No. 67 Prototype de masse, No. 34 Académie des sciences de Paris, France
No. 28 1 kg mass standard, S MSL, New Zealand
No. 27 1 kg mass standard in platinum-iridium "JM15" Conservatoire national des arts et métiers, France
No. 26 1 kg mass standard in platinum-iridium "E59" NMIJ/AIST, Japan
No. 25 1 kg mass prototype, No. 94 Japan
No. 24 1 kg mass prototype, No. 78 United States of America
No. 23 1 kg mass prototype, No. 74 Canada
No. 22 1 kg mass prototype, No. 60 China
No. 21 1 kg mass prototype, No. 55 Germany
No. 20 1 kg mass prototype, No. 38 Switzerland
No. 19 1 kg mass prototype, No. 20 United States of America
No. 18 1 kg mass prototype, No. 17 France
No. 17 1 kg mass prototype, No. 106 NRC, Canada

 2014
No. 55 1 kg mass prototype, No. 105 NIST, United States of America
No. 54 1 kg mass prototype, No. 104 NIST, United States of America
No. 53 1 kg mass prototype, No. 102 NIST, United States of America
No. 24 1 kg mass prototype, No. 12 Russian Federation
No. 23 1 kg mass standard, 4S2 VSL, Netherlands
No. 22 1 kg mass standard, 3S2 VSL, Netherlands
No. 21 1 kg mass standard in stainless steel, No. 116478 IPQ, Portugal
No. 20 1 kg mass standard in stainless steel, No. 116476 IPQ, Portugal
No. 19 1 kg mass standard in stainless steel, No. 116475 IPQ, Portugal
No. 18 1 kg mass standard in stainless steel, No. 1950507 LATU, Uruguay

 2013
No. 73 1 kg mass standard in stainless steel, 1Kr NML-SIRIM, Malaysia
No. 72 1 kg mass standard in stainless steel, 1K4 NML-SIRIM, Malaysia
No. 71 1 kg mass standard "A" in platinum-iridium NPL, United Kingdom
No. 70 1 kg mass prototype, No. 70 Germany
No. 69 1 kg mass standard in stainless steel, No. 81 INM, Romania
No. 68 1 kg mass prototype, No. 2 Romania
No. 48 1 kg mass prototype, No. 3 Spain
No. 47 1 kg mass prototype, No. 4 United States of America
No. 46 1 kg mass standard, 1Kc NML-SIRIM, Malaysia
No. 45 1 kg mass standard, 1K3 NML-SIRIM, Malaysia

 2012
No. 61 1 kg mass standard, 4S2 VSL, Netherlands
No. 60 1 kg mass standard, 3S2 VSL, Netherlands
No. 55 1 kg mass standard, K30 INTI, Argentina
No. 54 1 kg mass standard, No. 48 INTI, Argentina
No. 53 1 kg mass standard, 013504/00 EIM, Greece
No. 52 1 kg mass standard, 013501/00 EIM, Greece
No. 44 1 kg mass standard, P41205001 HMI, Croatia
No. 43 1 kg mass standard, P41204998 HMI, Croatia
No. 42 1 kg mass standard, P120684 HMI, Croatia
No. 41 1 kg mass standard, P0296 HMI, Croatia
No. 40 1 kg mass prototype, No. 57 India
No. 30 1 kg mass prototype, No. 85 United States of America
No. 25 1 kg mass standard in stainless steel, No. 112492 KIM-LIPI, Indonesia
No. 24 1 kg mass standard in stainless steel, No. 112491 KIM-LIPI, Indonesia
No. 23 1 kg mass standard in stainless steel, No. 74 KIM-LIPI, Indonesia
No. 16 1 kg mass standard, MP4 CEM, Spain
No. 15 1 kg mass prototype, No. 72 Korea (Republic of)
No. 6 1 kg mass standard, NSCCL CESMEC, Chile
No. 5 1 kg mass standard, SMD1+ SMD-ENS, SPF Economie, Belgium
No. 4 1 kg mass prototype, No. 79 United States of America
No. 3 1 kg mass prototype, No. 48 Denmark
No. 2 1 kg mass standard in stainless steel, 4S2 VSL, Netherlands
No. 1 1 kg mass standard in stainless steel, 3S2 VSL, Netherlands

 2011
No. 98 1 kg mass standard in stainless steel, E NMC, A*STAR, Singapore
No. 97 1 kg mass standard in stainless steel, D NMC, A*STAR, Singapore
No. 96 1 kg mass standard in stainless steel, C NMC, A*STAR, Singapore
No. 95 1 kg mass prototype, No. 4 United States of America
No. 94 1 kg mass prototype, No. 96 Mexico
No. 93 1 kg mass prototype, No. 23 Finland
No. 58 1 kg mass standard in stainless steel, 01-0706 LATU, Uruguay
No. 57 1 kg mass prototype, No. 95 Kenya
No. 43 1 kg mass standard in stainless steel, MS-S-14 Justervesenet, Norway
No. 42 1 kg mass standard in stainless steel, LMN5 Justervesenet, Norway
No. 41 1 kg mass prototype, No. 36 Norway
No. 7 1 kg mass standard in stainless steel, S MSL, New Zealand
No. 6 1 kg mass standard in stainless steel, 4S2 VSL, Netherlands
No. 5 1 kg mass standard in stainless steel, 3S2 VSL, Netherlands
No. 4 1 kg mass prototype, No. 92 United States of America
No. 3 1 kg mass prototype, No. 20 United States of America
No. 2 1 kg mass prototype, No. 74 Canada
No. 1 1 kg mass prototype, No. 58 Egypt

 2010
No. 60 Volume Magnetic Susceptibility of Sample, AR-Alac INTI, Argentina
No. 59 Volume Magnetic Susceptibility of Sample, AR-Ti INTI, Argentina
No. 50 1 kg mass standard in stainless steel, No. 11116701 BIM, Bulgaria
No. 43 1 kg mass standard in stainless steel, E1 NIS, Egypt
No. 42 1 kg mass standard in stainless steel, A NIS, Egypt
No. 41 1 kg mass standard in stainless steel, C2 NIMT, Thailand
No. 40 1 kg mass standard in stainless steel, C1 NIMT, Thailand
No. 39 1 kg mass standard in stainless steel, E0 NIMT, Thailand
No. 28 1 kg mass standard in stainless steel, KZ3 KazInMetr, Kazakhstan
No. 27 1 kg mass standard in stainless steel, KZ2 KazInMetr, Kazakhstan
No. 26 1 kg mass standard in stainless steel, KZ1 KazInMetr, Kazakhstan
No. 25 1 kg mass standard in stainless steel, TLT MSL, New Zealand
No. 24 1 kg mass standard in stainless steel, S MSL, New Zealand
No. 23 1 kg mass standard in stainless steel, No. 83700 NMC, A*STAR, Singapore
No. 22 1 kg mass prototype, No. 83 Singapore
No. 21 1 kg mass prototype, No. 52 Germany

 2009
No. 85 Volume magnetic susceptibility of sample, P17 1kg D MIKES, Finland
No. 61 1 kg mass standard, 1kr2 NML-SIRIM, Malaysia
No. 60 1 kg mass standard, 1K1 NML-SIRIM, Malaysia
No. 59 1 kg mass prototype, No. 94 Japan
No. 58 1 kg mass prototype, No. 64 China
No. 57 1 kg mass prototype, No. 60 China
No. 51 1 kg mass prototype, No. 67 Czechia
No. 50 1 kg mass prototype, No. 21 Mexico
No. 49 1 kg mass standard, "4S2" VSL, Netherlands
No. 48 1 kg mass standard, "3S2" VSL, Netherlands
No. 40 1 kg mass prototype, No. 49 Austria
No. 34 1 kg mass standard, MP060 INMETRO, Brazil
No. 33 1 kg mass prototype, No. 66 Brazil
No. 32 1 kg mass standard in stainless steel, No. 83700 NMC, A*STAR, Singapore
No. 31 1 kg mass prototype, No. 55 Germany
No. 30 1 kg mass standard in stainless steel, MP3 CEM, Spain

 2008
No. 58 Prototype de masse, n° 69 Portugal
No. 57 Prototype de masse, n° 92 United States of America
No. 56 Prototype de masse, n° 55 Germany
No. 43 1 kg mass standard, "1S1(A)" NMi-VSL, Netherlands
No. 42 1 kg mass standard, "2S1(3)" NMi-VSL, Netherlands
No. 41 1 kg mass standard, "2S2(2)" NMi-VSL, Netherlands
No. 40 1 kg mass standard, "1S2(1)" NMi-VSL, Netherlands
No. 39 1 kg mass standard in stainless steel, NPSL-1kg-E1 NPSL, Pakistan
No. 38 1 kg mass standard in "Immaculate V", No. E'69 NML, Ireland
No. 37 1 kg mass standard in stainless steel, No. 1950507 LATU, Uruguay

 2007
No. 86 1 kg mass standard in stainless steel, No. 112493 KIM-LIPI, Indonesia
No. 85 1 kg mass standard in stainless steel, No. 112492 KIM-LIPI, Indonesia
No. 84 1 kg mass standard in stainless steel, No. 112491 KIM-LIPI, Indonesia
No. 83 Volume Magnetic Susceptibility of sample, KL-Ti KIM-LIPI, Indonesia
No. 82 Volume Magnetic Susceptibility of sample, KL-Alac KIM-LIPI, Indonesia
No. 58 Prototype de masse, n° 16 Hungary
No. 56 1 kg mass standard in stainless steel, No. 83700 SPRING, Singapore
No. 55 Prototype de masse, n° 83 Singapore
No. 42 Prototype de masse, no 72 Korea (Republic of)
No. 41 Prototype de masse, no 48 Denmark
No. 20 1 kg mass standard in stainless steel, No. 33 ZMDM, Serbia
No. 2 Volume magnetic susceptibility of sample, EIM-Ti EIM, Greece
No. 1 Volume magnetic susceptibility of sample, EIM-Alac EIM, Greece

 2006
No. 55 1 kg mass standard in stainless steel, No. 1kr NMIM, Malaysia
No. 54 1 kg mass standard in stainless steel, No. 1K3 NMIM, Malaysia
No. 28 1 kg mass standard in stainless steel, PTB47 INTI, Argentina
No. 27 1 kg mass standard in stainless steel, K30 INTI, Argentina
No. 23 1 kg mass standard in stainless steel, 013504/00 EIM, Greece
No. 13 1 kg mass standard in stainless steel, 1kr2 NML-SIRIM, Malaysia
No. 12 1kg mass standard in stainless steel, 1K4 NML-SIRIM, Malaysia
No. 11 Prototype de masse, no 76 Italy
No. 10 Prototype de masse, no 49 Austria
No. 9 Prototype de masse, no 28 Belgium

 2005
No. 96 1 kg mass standard in stainless steel, No. 013501/00 EIM, Greece
No. 91 Étalon de masse de 1 kg en acier inxoydable, no 81 INM, Romania
No. 90 Prototype de masse, no 2 Romania
No. 89 Prototype de masse, no 44 Australia
No. 88 Prototype de masse, 56 South Africa
No. 79 Prototype de masse, 75 SCL, Hong Kong (China)
No. 78 Étalon de masse de 1 kg en acier inoxydable, (SMB) 1 Belgium
No. 73 1 kg mass standard in stainless steel, S MSL, New Zealand
No. 72 Prototype de masse, 3 Spain
No. 71 1 kg mass standard in stainless steel, 1S2(2) NMi-VSL, Netherlands
No. 70 1 kg mass standard in stainless steel, 1S2(1) NMi-VSL, Netherlands
No. 69 Prototype de masse, 78 CMS, Chinese Taipei
No. 68 1 kg mass prototype, 46 Indonesia
No. 6 1 kg mass standard in stainless steel, No. 83700 SPRING, Singapore
No. 5 1 kg mass standard in stainless steel, C2 NIMT, Thailand
No. 4 1 kg mass standard in stainless steel, C1 NIMT, Thailand
No. 3 1 kg mass standard in stainless steel, E0 NIMT, Thailand
No. 2 Prototype de masse, no 90 Mexico
No. 1 Prototype de masse, no 89 Switzerland

 2004
No. 92 1 kg mass standard in stainless steel, No. 15 METAS, Switzerland
No. 91 1 kg mass standard in stainless steel, No. 14 METAS, Switzerland
No. 90 1 kg mass standard in stainless steel, No. 40503314 NCM, Bulgaria
No. 89 1 kg mass standard in stainless steel, No. 1 MT, Switzerland
No. 77 Prototype de masse, no 87 Australia
No. 72 Volume magnetic susceptibility of sample, CEM-A CEM, Spain
No. 69 Prototype de masse, no 80 Thailand
No. 68 Prototype de masse, no 86 Sweden
No. 42 Volume magnetic susceptibility, NML-Ti NMIA, Australia
No. 41 Volume magnetic susceptibility, NML-Alac NMIA, Australia
No. 22 Volume magnetic susceptibility, NIM-Ti NIM, China
No. 21 Volume magnetic susceptibility, NIM-A1ac NIM, China
No. 20 Prototype de masse, no 82 NPL, United Kingdom

 2003
No. 78 1 kg mass standard in stainless steel, No. M001 NMIM, Malaysia
No. 74 1 kg mass standard in stainless steel, No. T 4 NMIJ AIST, Japan
No. 72 Susceptibilité magnétique volumique, LNE 03 LNE, France
No. 70 Prototype de masse, no 85 United States of America
No. 66 Prototype de masse, no 38 Switzerland
No. 57 Prototype de masse, no 53 Netherlands
No. 56 Prototype de masse, no 65 Slovakia
No. 53 Prototype de masse, no 84 Korea (Republic of)
No. 52 Prototype de masse, no 83 Singapore
No. 34 1 kg mass standard in platinum-iridium, No. "A" NPL, United Kingdom
No. 33 Prototype de masse, no 55 Germany
No. 11 Prototype de masse, no 57 India

 2002
No. 90 1 kg mass standard in "Nicral D", No. SASO 1 SASO, Saudi Arabia
No. 71 Prototype de masse, no 72 Korea (Republic of)
No. 70 1 kg mass standard in "Immaculate V", No. E'69 NML, Ireland
No. 65 1 kg mass standard in stainless steel, No. IRMM-15918 IRMM
No. 43 Prototype de masse, no 70 Germany
No. 42 Prototype de masse, no 35 France
No. 12 Prototype de masse, no 58 Egypt
No. 11 1 kg mass standard in stainless steel, No. 8 CSIR-NML, South Africa
No. 1 1 kg mass standard in stainless steel, No. 85380 PSB, Singapore

 2001
No. 84 Prototype de masse, no 74 Canada
No. 61 Prototype de masse, no 48 Denmark
No. 59 Prototype de masse, no 24 Spain
No. 58 Prototype de masse, no 23 Finland
No. 57 1 kg mass standard in stainless steel, LPN-00-07 CENAM, Mexico
No. 56 1 kg mass standard in stainless steel, LPN-00-02 CENAM, Mexico
No. 55 Prototype de masse, no 21 Mexico
No. 15 Prototype de masse, no 36 Norway
No. 14 1 kg mass standard in stainless steel, LMN5 Justervesenet, Norway
No. 13 1 kg mass standard in stainless steel, LMN1 Justervesenet, Norway
No. 12 1 kg mass standard in stainless steel, MS-S-14 Justervesenet, Norway
No. 3 1 kg mass standard in stainless steel, No. 83700 PSB, Singapore
No. 2 1 kg mass standard in platinum-iridium, No. "A" NPL, United Kingdom
No. 1 Prototype de masse, no 55 Germany

 2000
No. 25 1 kg mass standard in stainless steel, MP3 CEM, Spain
No. 24 1 kg mass standard in stainless steel, No. 48 INTI, Argentina
No. 23 1 kg mass standard in stainless steel, K30 INTI, Argentina
No. 22 Prototype de masse, no 20 United States of America
No. 21 Prototype de masse, no 4 United States of America
No. 20 1 kg mass standard in stainless steel, No. 2188 LATU, Uruguay
No. 19 1 kg mass standard in stainless steel, Mettler-S MSL-IRL, New Zealand
No. 9 1 kg mass standard in stainless steel, NSCCL CESMEC, Chile
No. 8 Prototype de masse, no 76 Italy
No. 7 Prototype de masse, no 67 Czechia

Study Notes
2015
No. 5 1 kg mass prototype, No. 109 PTB, Germany

 2010
No. 3 1 kg mass standard in stainless steel, E0 NIS, Egypt

 2009
No. 2 Étalon de masse de 500 g en platine iridié, "W2" LNE-INM/Cnam, France
No. 1 Étalon de masse de 500 g en platine iridié, "W1" LNE-INM/Cnam, France

 2008
No. 3 1 kg mass standard, No. 651 NPL, United Kingdom
No. 2 1 kg mass standard in platinum-iridium, "A" NPL, United Kingdom

 2003
No. 1 1 kg mass standard in platinum-iridium, No. 651 NPL, United Kingdom

 2001
No. 4 Four 1 kg mass standards in stainless steel, E4, E5, E6, E7 SMU, Slovakia
No. 1 1 kg mass standard in platinum-iridium, No. 651 NPL, United Kingdom
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