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Calibration and characterization certificates: Mass
2014
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 Republic of Korea
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 Czech Republic
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 Republic of Korea
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 NML-SIRIM, Malaysia
No. 54 1 kg mass standard in stainless steel, No. 1K3 NML-SIRIM, 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 NML-SIRIM, 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 Republic of Korea
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 Republic of Korea
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 Czech Republic

Study Notes
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
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
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Comparisons piloted by the BIPM