In the CMCs uncertainty statements, the notation Q[a, b] stands for the root-sum-square of the terms between brackets: Q[a, b] = [a 2 + b 2]1/2 Unless otherwise stated the expanded uncertainties given below correspond to k = 2 (at a 95 % level of confidence)
Costa Rica, LACOMET (Laboratorio Costarricense de Metrologia)
Mass,
Conventional mass:20 g
Mass standard
Absoluteexpanded uncertainty:2.7E-2 mg
Direct comparison
Temperature : 19 ºC to 21 ºC
Relative humidity : 45 % to 60 %
Approved on26 November 2008
Institute service identifier : LACOMET/MF-MA-PR-01
Mass,
Conventional mass:5 mg
Mass standard
Absoluteexpanded uncertainty:2.0E-3 mg
Direct comparison
Temperature : 19 ºC to 21 ºC
Relative humidity : 45 % to 60 %
Approved on26 November 2008
Institute service identifier : LACOMET/MF-MA-PR-01
Mass,
Conventional mass:10 g
Mass standard
Absoluteexpanded uncertainty:2.0E-2 mg
Direct comparison
Temperature : 19 ºC to 21 ºC
Relative humidity : 45 % to 60 %
Approved on26 November 2008
Institute service identifier : LACOMET/MF-MA-PR-01
Mass,
Conventional mass:50 kg
Mass standard
Absoluteexpanded uncertainty:5.0E1 mg
Direct comparison
Temperature : 19 ºC to 21 ºC
Relative humidity : 45 % to 60 %
Approved on26 November 2008
Institute service identifier : LACOMET/MF-MA-PR-01
Mass,
Conventional mass:1 g
Mass standard
Absoluteexpanded uncertainty:1.0E-2 mg
Direct comparison
Temperature : 19 ºC to 21 ºC
Relative humidity : 45 % to 60 %
Approved on26 November 2008
Institute service identifier : LACOMET/MF-MA-PR-01
Mass,
Conventional mass:100 mg
Mass standard
Absoluteexpanded uncertainty:5.0E-3 mg
Direct comparison
Temperature : 19 ºC to 21 ºC
Relative humidity : 45 % to 60 %
Approved on26 November 2008
Institute service identifier : LACOMET/MF-MA-PR-01
Mass,
Conventional mass:500 mg
Mass standard
Absoluteexpanded uncertainty:8.0E-3 mg
Direct comparison
Temperature : 19 ºC to 21 ºC
Relative humidity : 45 % to 60 %
Approved on26 November 2008
Institute service identifier : LACOMET/MF-MA-PR-01
Mass,
Conventional mass:100 g
Mass standard
Absoluteexpanded uncertainty:5.3E-2 mg
Direct comparison
Temperature : 19 ºC to 21 ºC
Relative humidity : 45 % to 60 %
Approved on26 November 2008
Institute service identifier : LACOMET/MF-MA-PR-01
Mass,
Conventional mass:2 g
Mass standard
Absoluteexpanded uncertainty:1.3E-2 mg
Direct comparison
Temperature : 19 ºC to 21 ºC
Relative humidity : 45 % to 60 %
Approved on26 November 2008
Institute service identifier : LACOMET/MF-MA-PR-01
Mass,
Conventional mass:500 g
Mass standard
Absoluteexpanded uncertainty:0.27 mg
Direct comparison
Temperature : 19 ºC to 21 ºC
Relative humidity : 45 % to 60 %
Approved on26 November 2008
Institute service identifier : LACOMET/MF-MA-PR-01
Mass,
Conventional mass:20 kg
Mass standard
Absoluteexpanded uncertainty:2.0E1 mg
Direct comparison
Temperature : 19 ºC to 21 ºC
Relative humidity : 45 % to 60 %
Approved on26 November 2008
Institute service identifier : LACOMET/MF-MA-PR-01
Mass,
Conventional mass:50 mg
Mass standard
Absoluteexpanded uncertainty:4.0E-3 mg
Direct comparison
Temperature : 19 ºC to 21 ºC
Relative humidity : 45 % to 60 %
Approved on26 November 2008
Institute service identifier : LACOMET/MF-MA-PR-01
Mass,
Conventional mass:1 mg
Mass standard
Absoluteexpanded uncertainty:2.0E-3 mg
Direct comparison
Temperature : 19 ºC to 21 ºC
Relative humidity : 45 % to 60 %
Approved on26 November 2008
Institute service identifier : LACOMET/MF-MA-PR-01
Mass,
Conventional mass:200 mg
Mass standard
Absoluteexpanded uncertainty:7.0E-3 mg
Direct comparison
Temperature : 19 ºC to 21 ºC
Relative humidity : 45 % to 60 %
Approved on26 November 2008
Institute service identifier : LACOMET/MF-MA-PR-01
Mass,
Conventional mass:20 mg
Mass standard
Absoluteexpanded uncertainty:3.0E-3 mg
Direct comparison
Temperature : 19 ºC to 21 ºC
Relative humidity : 45 % to 60 %
Approved on26 November 2008
Institute service identifier : LACOMET/MF-MA-PR-01
Mass,
Conventional mass:50 g
Mass standard
Absoluteexpanded uncertainty:3.3E-2 mg
Direct comparison
Temperature : 19 ºC to 21 ºC
Relative humidity : 45 % to 60 %
Approved on26 November 2008
Institute service identifier : LACOMET/MF-MA-PR-01
Mass,
Conventional mass:200 g
Mass standard
Absoluteexpanded uncertainty:0.1 mg
Direct comparison
Temperature : 19 ºC to 21 ºC
Relative humidity : 45 % to 60 %
Approved on26 November 2008
Institute service identifier : LACOMET/MF-MA-PR-01
Mass,
Conventional mass:2 kg
Mass standard
Absoluteexpanded uncertainty:1.5 mg
Direct comparison
Temperature : 19 ºC to 21 ºC
Relative humidity : 45 % to 60 %
Approved on26 November 2008
Institute service identifier : LACOMET/MF-MA-PR-01
Mass,
Conventional mass:10 mg
Mass standard
Absoluteexpanded uncertainty:3.0E-3 mg
Direct comparison
Temperature : 19 ºC to 21 ºC
Relative humidity : 45 % to 60 %
Approved on26 November 2008
Institute service identifier : LACOMET/MF-MA-PR-01
Mass,
Conventional mass:2 mg
Mass standard
Absoluteexpanded uncertainty:2.0E-3 mg
Direct comparison
Temperature : 19 ºC to 21 ºC
Relative humidity : 45 % to 60 %
Approved on26 November 2008
Institute service identifier : LACOMET/MF-MA-PR-01
This metrology area covers the fields of DC and AC measurements, impedance, electric and magnetic fields, radiofrequencies and measurements on materials.