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Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Mass and related quantities for Mexico (.PDF file)
Volume of liquid. Volumetric test measure (pipette, burette, flask), 1 cm3 to 10 cm3
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.05
Gravimetric determination
Temperature: 19 °C to 21 °C
Approved on 12 March 2007
Internal NMI service identifier: CENAM/FV10
 
Volume of liquid. Volumetric test measure (pipette, burette, flask), 10 cm3 to 2000 cm3
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.01
Gravimetric determination
Temperature: 19 °C to 21 °C
Approved on 12 March 2007
Internal NMI service identifier: CENAM/FV11
 
Volume of liquid. Volumetric test measure (pycnometer), 10 cm3 to 100 cm3
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.004
Gravimetric determination
Temperature: 19 °C to 21 °C
Approved on 12 March 2007
Internal NMI service identifier: CENAM/FV12
 
Volume of liquid. Volumetric test measure (graduated neck type), 2 dm3 to 50 dm3
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.015
Gravimetric determination
Temperature: 19 °C to 21 °C
Approved on 12 March 2007
Internal NMI service identifier: CENAM/FV13
 
Volume of liquid. Volumetric test measure (overflow type pipette), 5 dm3 to 50 dm3
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.005
Gravimetric determination
Temperature: 19 °C to 21 °C
Approved on 12 March 2007
Internal NMI service identifier: CENAM/FV14
 
Volume of liquid. Volumetric test measure (graduated neck type), 50 dm3 to 3000 dm3
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.02
Volumetric transfer
Temperature: 18 °C to 26 °C
Approved on 12 March 2007
Internal NMI service identifier: CENAM/FV15
 
Volume of liquid. Volume quantity meter, 50 dm3 to 3000 dm3
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.06
Turbine and positive displacement meter
Temperature: 18 °C to 26 °C
Kinematic viscosity: 0.5 mm2/s to 5 mm2/s
Flow: < 50 dm3/s
Approved on 12 March 2007
Internal NMI service identifier: CENAM/FV16
 
Kinematic viscosity. Newtonian liquids, 0.003 mm2/s2
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.22
Capillary viscometer
Temperature: 20 °C
Uncertainty statement corresponds to a reference temperature of 20 °C
Approved on 22 June 2006
Internal NMI service identifier: CENAM/1
 
Kinematic viscosity. Newtonian liquids, 0.1 mm2/s2 to 3 mm2/s2
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.26
Capillary viscometer
Temperature: 20 °C
Uncertainty statement corresponds to a reference temperature of 20 °C
Approved on 22 June 2006
Internal NMI service identifier: CENAM/2
 
Kinematic viscosity. Newtonian liquids, 10 mm2/s2 to 30 mm2/s2
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.36
Capillary viscometer
Temperature: 20 °C
Uncertainty statement corresponds to a reference temperature of 20 °C
Approved on 22 June 2006
Internal NMI service identifier: CENAM/3
 
Kinematic viscosity. Newtonian liquids, 0.9 mm2/s to 1.2 mm2/s
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.24
Reference liquid
Temperature: 40 °C to 20 °C
Uncertainty statement corresponds to a reference temperature of 20 °C
Approved on 22 June 2006
Internal NMI service identifier: CENAM/4
 
Kinematic viscosity. Newtonian liquids, 5 mm2/s to 22 mm2/s
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.30
Reference liquid
Temperature: 40 °C to 20 °C
Uncertainty statement corresponds to a reference temperature of 20 °C
Approved on 22 June 2006
Internal NMI service identifier: CENAM/5
 
Kinematic viscosity. Newtonian liquids, 3.5 mm2/s to 1800 mm2/s
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.35
Reference liquid
Temperature: 100 °C to 20 °C
Uncertainty statement corresponds to a reference temperature of 20 °C
Approved on 22 June 2006
Internal NMI service identifier: CENAM/6
 
Kinematic viscosity. Newtonian liquids, 80 mm2/s to 11600 mm2/s
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.40
Reference liquid
Temperature: 100 °C to 20 ºC
Uncertainty statement corresponds to a reference temperature of 20 °C
Approved on 22 June 2006
Internal NMI service identifier: CENAM/7
 
Kinematic viscosity. Newtonian liquids, 160 mm2/s to 35000 mm2/s
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.60
Reference liquid
Temperature: 100 °C to 20 ºC
Uncertainty statement corresponds to a reference temperature of 20 °C
Approved on 22 June 2006
Internal NMI service identifier: CENAM/8
 
Kinematic viscosity. Newtonian liquids, 200 mm2/s to 100000 mm2/s
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.70
Reference liquid
Temperature: 100 °C to 20 ºC
Uncertainty statement corresponds to a reference temperature of 20 °C
Approved on 22 June 2006
Internal NMI service identifier: CENAM/9
 
Kinematic viscosity. Newtonian liquids, 650 mm2/s to 326000 mm2/s
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.80
Reference liquid
Temperature: 100 °C to 20 ºC
Uncertainty statement corresponds to a reference temperature of 20 °C
Approved on 22 June 2006
Internal NMI service identifier: CENAM/10
 
Kinematic viscosity. Newtonian liquids, 3000 mm2/s to 770000 mm2/s
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 1.0
Reference liquid
Temperature: 100 °C to 20 ºC
Uncertainty statement corresponds to a reference temperature of 20 °C
Approved on 22 June 2006
Internal NMI service identifier: CENAM/11
 
Volume water flow rate. Liquid volume flow meters, 0.42 dm3/s to 200 dm3/s
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.040
Volumetric flowmeter (e.g., positive displacement, rotary piston, turbine, venturi, nozzle, ultrasonic, orifice plate, vortex meter, electromagnetic)
Fluid: water
Pressure: 0.1 MPa to 1 MPa
Temperature: 18 °C to 26 °C
Pipe sizes: 25 mm to 200 mm
Approved on 12 March 2007
Internal NMI service identifier: CENAM/FV1
 
Volume hydrocarbon flow rate. Oil flow meters, 0.00067 dm3/s to 1.67 dm3/s
Relative expanded uncertainty (k = 2, level of confidence 95%) in %: 0.060
Volumetric flowmeter (e.g., positive displacement, rotary piston, turbine, ultrasonic)
Kinematic viscosity: 0.5 mm2/s to 10 mm2/s
Pressure: 0.3 MPa to 0.6 MPa
Temperature: 18 °C to 24 °C
Pipe sizes: 6 mm to 25 mm
Approved on 12 March 2007
Internal NMI service identifier: CENAM/FV2