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SubNo 
Field 
Comparison inentifier 
Description 
Start Year 
Finish Year 
Comparison type 
Field 
Parameter(s)/Measured 
Status 
Pilot 
Publiah Year 
Density 

1 
M 
APMP.M.D K4 
Comparison of the calibration of density hydrometers 
2007 
2008 
K 
Mass, Density 

In progress 
KRISS 

Fluid Flow 

2 
M 
CCM.FF K4.2.2011 
Liquid volume 
2011 
2012 
K 
Mass, Fluid Flow 
Liquid volume: 100 µL 
Approved for equivalence, Results available 
IPQ 

3 
M 
CCM.FF K6.2011 
Low pressure gas flow 
2011 

K 
Mass, Fluid Flow 
Gas flow: 2 m3/h to 100 m3/h 
Report in progress, Draft A 
SMU 

4 
M 
APMP.M.FF K1 
Water flow 
2009 
2010 
K 
Mass, Fluid Flow 
Test pipe diameter: 100 mm 
Approved for equivalence, Results available 
KRISS 
2011 
5 
M 
APMP.M.FF K4 
Liquid volume 
2006 
2008 
K 
Mass, Fluid Flow 
Water volume: 50 ml, 100 ml, and 20 l 
Approved for equivalence, Results available 
NMIA 
2011 
6 
M 
CCM.FF K4.1.2011 
Liquid volume 
2011 
2012 
K 
Mass, Fluid Flow 
Liquid volume: 100 mL, and 20 L 
In progress 
CENAM 

Force 

7 
M 
CCM.F K1.a 
Low force measurements 
2000 
2001 
K 
Mass, Force 
Force: 0 kN, 5 kN and 10 kN 
Approved for equivalence, Results available 
MIKMIKES 
2009 
8 
M 
CCM.F K1.b 
Low force measurements 
2000 
2001 
K 
Mass, Force 
Force: 0 kN and 5 kN 
Approved for equivalence, Results available 
MIKMIKES 
2009 
9 
M 
CCM.F K12 
Very high force measurements 


K 
Mass, Force 
Force: 1 MN to 20 MN 
Approved for provisional equivalence 
未给出 

10 
M 
CCM.F K13 
High force measurements 


K 
Mass, Force 

Approved for provisional equivalence 
CNRIMGC 

11 
M 
CCM.F K2.a 
Medium force measurements 
2004 
2006 
K 
Mass, Force 
Force: 0 kN, 50 kN and 100 kN 
Approved for equivalence, Results available 
NPL 

12 
M 
CCM.F K3.a 
High force measurements 
2005 
2007 
K 
Mass, Force 
Force: 0 MN, 0.5 MN and 1 MN 
Report in progress, Draft A 
PTB 

13 
M 
CCM.F K3.b 
High force measurements 
2005 
2005 
K 
Mass, Force 
Force: 0 MN and 0.5 MN 
Report in progress, Draft A 
PTB 

14 
M 
CCM.F K4.a 
Very high force measurements 
2002 
2004 
K 
Mass, Force 
Force: 0 MN, 2 MN and 4 MN 
Approved for equivalence, Results available 
NIST 

15 
M 
CCM.F K7 
High force measurements 
/ 
/ 
K 
Mass, Force 
Force: 0.2 MN to 5 MN 
Approved for provisional equivalence 


16 
M 
CCM.F K8 
Medium force measurements 


K 
Mass, Force 
Force: 10 kN to 80 kN 
Approved for provisional equivalence 


17 
M 
CCM.F K9 
Medium force measurements 


K 
Mass, Force 
Force: 0.1 kN to 5 kN 
Approved for provisional equivalence 


18 
M 
APMP.M.F K3.a 
High force measurements 
2011 
2013 
K 
Mass, Force 
Force: 0 MN, 0.5 MN and 1 MN 
Planned 
NIM 

19 
M 
APMP.M.F K3.b 
High force measurements 
2011 
2013 
K 
Mass, Force 
Force: 0 MN and 0.5 MN 
Planned 
NIM 

Hardness 

20 
M 
CCM.H K1.a 
Hardness (Vickers 0.2) 
2001 
2003 
K 
Mass, Hardness 
Hardness: 240 HV, 540 HV and 840 HV 
Approved for equivalence, Results available 
PTB 
2006 
21 
M 
CCM.H K1.b 
Hardness (Vickers 1) 
2001 
2002 
K 
Mass, Hardness 
Hardness: 240 HV, 540 HV and 840 HV 
Approved for equivalence, Results available 
PTB 
2006 
22 
M 
CCM.H K1.c 
Hardness (Vickers 30) 
2001 
2002 
K 
Mass, Hardness 
Hardness: 240 HV, 540 HV and 840 HV 
Approved for equivalence, Results available 
PTB 
2006 
23 
M 
CCM.H 
Brinell Hardness 
2003 
2003 
K 
Mass, Hardness 

Report in progress, Draft A 
KRISS、NMIJ 

24 
M 
APMP.M.H K1.b 
Hardness (Vickers 1) 
2003 
2004 
K 
Mass, Hardness 
Hardness: 200 HV, 600 HV and 900 HV 
In progress 
NMIJ 

25 
M 
APMP.M.H K1.c 
Hardness (Vickers 30) 
2003 
2004 
K 
Mass, Hardness 
Hardness: 200 HV, 600 HV and 900 HV 
In progress 
NMIJ 

Mass Standards 

26 
M 
CCM.M K1 
Comparison of mass standards 
1995 
1998 
K 
Mass, Mass Standards 
Mass: 1 kg 
Approved for equivalence, Results available 
BIPM 

27 
M 
CCM.M 
Comparison of mass standards 
1998 
1999 
K 
Mass, Mass Standards 
Mass: 100 mg, 2 g, 20 g, 500 g and 10 kg 
Approved for equivalence, Results available 
PTB 

28 
M 
CCM.M K5 
Comparison of mass standards 
2002 
2003 
K 
Mass, Mass Standards 
Mass: 200 mg, 1 g, 50 g, 200 g and 2 kg 
Approved for equivalence, Results available 
NMIJ 
2011 
29 
M 
CCM.M K4 
Comparison of mass standards 
2011 
2012 
K 
Mass, Mass Standards 
Mass: 1 kg 
In progress 
BIPM 

Pressure 

30 
M 
APMP.M.P K4 
Pressure measurements in gas (absolute mode) 
2002 
2002 
K 
Mass, Pressure 
Pressure: 1 Pa to 1000 Pa 
Protocol complete 
NPLI 

31 
M 
APMP.M.P K7 
Pressure measurements in oil (gauge mode) 
2002 
2004 
K 
Mass, Pressure 
Pressure: 10 MPa to 100 MPa 
Approved for equivalence, Results available 
NMIJ 

32 
M 
APMP.M.P K9 
Pressure measurements (absolute mode) 
2009  

K 
Mass, Pressure 
Pressure: 10 kPa to 110 kPa 
In progress 
KRISSNMIA 

33 
M 
APMP.M.P K13 
Hydraulic gauge pressure 
2011 
2012 
K 
Mass, Pressure 
Pressure: 50 MPa to 500 Mpa 
In progress 
NMIJ 

34 
M 
CCM.P K11 
Pressure measurements (gauge mode) 
1981 
1989 
K 
Mass, Pressure 
Pressure: 20 MPa to 100 MPa 
Approved for provisional equivalence 
BNMLNE 

35 
M 
CCM.P K12 
Leak rates 
2007 
2008 
K 
Mass, Pressure 
Flow rate of helium leak artefacts Temperature: 23 °C 
Report in progress, Draft B 
PTB 

36 
M 
CCM.P K6 
Pressure measurements (gauge mode) 
1998 
2001 
K 
Mass, Pressure 
Area of a pistoncylinder Pressure: 10 kPa to 120 kPa 
Approved for equivalence, Results available 
NPL 
2006 
37 
M 
CCM.P K9 
Pressure measurements 
1981 
1987 
K 
Mass, Pressure 
Pressure: 0.1 mPa to 1000 mPa 
Approved for provisional equivalence 
PTB 

38 
M 
CCM.P K13 
Hydraulic gauge pressure 
2008 
2010 
K 
Mass, Pressure 
Pressure: 50 MPa to 500 MPa 
Approved for equivalence, Results available 
PTB 

39 
M 
CCM.PK14.1 
Comparison of absolute pressure in the range 0.1 mPa to 1 Pa 
2011 
2012 
K 
Mass, Pressure 
Pressure: 0.1 mPa to 1 Pa 
Protocol complete 
METAS 

Torque 

40 
M 
CCM.T 
Torque measurements 
2005 
2006 
K 
Mass, Torque 
20 kN m 
In progress 
PTB 

41 
M 
CCM.V K1.A 
Viscosity measurements of standard liquids 
2002 
2002 
K 
Mass, Viscosity 
Standard liquid A, kinematic viscosity: 10 mm2/s ； Temperature: 20 °C 
Approved for equivalence, Results available 
PTB 

42 
M 
CCM.V K1.B1 
Viscosity measurements of standard liquids 
2002 
2002 
K 
Mass, Viscosity 
Standard liquid B1, kinematic viscosity: 1300 mm2/s； Temperature: 20 °C 
Approved for equivalence, Results available 
PTB 

43 
M 
CCM.V K1.C 
Viscosity measurements of standard liquids 
2002 
2002 
K 
Mass, Viscosity 
Standard liquid C, kinematic viscosity: 40000 mm2/s ； Temperature: 20 °C 
Approved for equivalence, Results available 
PTB 

44 
M 
CCM.V K2.A 
Viscosity measurements of standard liquids 
2006 
2006 
K 
Mass, Viscosity 
Standard liquid A, Temperature: 40 °C, 20 °C, and 20 °C 
Approved for equivalence, Results available 
CANNON 
2009 
45 
M 
CCM.V K2.B 
Viscosity measurements of standard liquids 
2006 
2006 
K 
Mass, Viscosity 
Standard liquid B, Temperature: 20 °C, 100 °C, and 150 °C 
Approved for equivalence, Results available 
CANNON 
2009 
46 
M 
EUROMET.M.V S4 
Viscosity measurements 
1997 
1997 
S 
Mass, Viscosity 
Kinematic viscosity of liquids: 0.33 mm2/s to 144000 mm2/s 
Published 
PTB 

47 
M 
CCM.G K1 
Freefall acceleration 
2009 
 
K 
Mass, Gravity 

Approved for equivalence, Results available 
BIPM、VNIIM 

48 
M 
APMP.M.G S1 
Freefall acceleration 
2012 
2012 
S 
Mass, Gravity 

Planned 
NIM 

49 
M 
APMP.M.P K1.c.2 
Pressure measurements in gas (gauge mode) 
2012 
2012 
K 
Mass, Pressure 
Pressure: 0.4 MPa to 4.0 MPa 
Planned 
KRISS 

50

M

APMP.M.P K14

Comparison of absolute pressure in the range 0.1 mPa to 1 Pa

2013 
2014

K 
Key comparison in Mass, Pressure 
Pressure: 0.1 mPa to 1 Pa 
Protocol complete 
NMIJ 

51  M  CCM.G K2  Freefall acceleration  2013  2013  k  Key comparison in Mass, Gravity Freefall acceleration 
Freefall acceleration: 9.81 m/s2  Planned  METAS  