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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)
Fluid flow , Volume of liquid : 10 mL to 100 mL
Volumetric test measure (pycnometer)
Relative expanded uncertainty : 5.0E-3 %
Gravimetric determination
Liquid : water
Air temperature : 18 °C to 24 °C
Water temperature : 18 °C to 24 °C
Density formula according to Metrologia, 38, 2001, 301-309 The density formula is used with corrections for air-saturated water and compressibility
Approved on 18 October 2019
Institute service identifier : 4.8.9.5.1
Fluid flow , Volume of liquid : 5 L to 19 L
Volumetric test measure (graduated neck type)
Relative expanded uncertainty : 4.0E-2 % to 2.0E-2 %
Gravimetric determination
Liquid : water
Air temperature : 18 °C to 24 °C
Water temperature : 18 °C to 24 °C
Density formula according to Metrologia, 38, 2001, 301-309 The density formula is used with corrections for air-saturated water and compressibility
Approved on 18 October 2019
Institute service identifier : 4.9.9.5.1
Fluid flow , Volume of liquid : 1 mL to 2000 mL
Volumetric test measure (flask)
Absolute expanded uncertainty : 1.3E-2 mL to 0.24 mL
0.000112V + 0.013  V in mL
Gravimetric determination
Liquid : water
Air temperature : 18 °C to 24 °C
Water temperature : 18 °C to 24 °C
Density formula according to Metrologia, 38, 2001, 301-309 The density formula is used with corrections for air-saturated water and compressibility
Approved on 18 October 2019
Institute service identifier : 4.4.9.5.1
Fluid flow , Volume of liquid : 1 mL to 100 mL
Volumetric test measure (graduated pipette and burette)
Relative expanded uncertainty : 0.1 % to 0.5 %
Gravimetric determination
Liquid : water
Air temperature : 18 °C to 24 °C
Water temperature : 18 °C to 24 °C
Density formula according to Metrologia, 38, 2001, 301-309 The density formula is used with corrections for air-saturated water and compressibility
Approved on 18 October 2019
Institute service identifier : 4.6.9.5.1; 4.7.9.5.1
Fluid flow , Volume of liquid : 1 mL to 100 mL
Volumetric test measure (one mark pipette)
Absolute expanded uncertainty : 3.2E-3 mL to 2.4E-2 mL
0.00021V + 0.003 V in mL
Gravimetric determination
Liquid : water
Air temperature : 18 °C to 24 °C
Water temperature : 18 °C to 24 °C
Density formula according to Metrologia, 38, 2001, 301-309 The density formula is used with corrections for air-saturated water and compressibility
Approved on 18 October 2019
Institute service identifier : 4.3.9.5.1
Fluid flow , Volume of liquid : 1 µL to 1000 µL
Volumetric test measure (piston pipettes)
Absolute expanded uncertainty : 7.6E-2 µL to 5.1 µL
0.005V + 0.071 V in µL
Gravimetric determination
Liquid : water
Air temperature : 18 °C to 24 °C
Water temperature : 18 °C to 24 °C
Density formula according to Metrologia, 38, 2001, 301-309 The density formula is used with corrections for air-saturated water and compressibility
Approved on 18 October 2019
Institute service identifier : 4.1.9.5.1

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