Calibration and Measurement Capabilities
Amount of substance, Gases, Brazil, INMETRO (Instituto Nacional de Metrologia, Qualidade e Tecnologia)
The expanded uncertainty ranges given in the following CMCs may be expressed according to two conventions. For 'Uncertainty convention 1', the expanded uncertainty range spans from the smallest
numerical value of the uncertainty to the largest numerical value of the uncertainty found within the quantity range. For 'Uncertainty convention 2', the expanded uncertainty range is expressed as the uncertainty
of the smallest value of the quantity to the uncertainty of the largest value of the quantity.
The expanded uncertainties correspond to k = 2 (level of confidence 95%).
Measurand
NMI
Service
Identifier
8833b
Measurement
Service SubCategory
Environmental
nitrogen
Analyte or
Component
Quantity
From
To
Unit
From
To
Unit
Is the
expanded
uncertainty a
relative one?
carbon
monoxide
Amount-ofsubstance
fraction
3
90
mmol/m
ol
1.0
1.0
%
Yes
0.75
0.75
%
Yes
0.5
0.5
%
Yes
10
propane
8833g
Environmental
nitrogen
propane
8833h
Environmental
nitrogen
carbon
monoxide
8833j
Environmental
nitrogen
sulfur
dioxide
8633b
Environmental
nitrogen
carbon
monoxide
8897b
Environmental
nitrogen
carbon
dioxide
8123
Environmental
nitrogen
propane
8634
Environmental
nitrogen
carbon
monoxide
200
Amount-ofsubstance
fraction
Amount-ofsubstance
fraction
Amount of
substance
fraction
Amount of
substance
fraction
Amount of
substance
fraction
Amount of
substance
fraction
Amount of
substance
fraction
carbon
dioxide
propane
Fuel
synthetic
natural gas
methane
Amount-ofsubstance
fraction
carbon
dioxide
nitrogen
8833l
Environmental
Range of Expanded Uncertainties
as Disseminated
Range of Certified Values
in Reference Materials
Matrix
carbon
dioxide
8833a
Dissemination Range
of Measurement
Capability
nitrogen
nitrogen
monoxide
Amount-ofsubstance
fraction
The BIPM key comparison database, October 2015
mmol/m
ol
µmol/mo
3500
l
150
From
To
Unit
Range of Expanded Uncertainties for
Mechanism(s)
Certified Value
for
Measurement
Is the
Service
expanded
Delivery
From
To
Unit
uncertainty a
relative one?
Comment(s)
Calibration
service
Approved on 27
March 2013
Comment(s)
100
3500
µmol/mo
l
1.0
0.5
%
Yes
Calibration
service
Approved on 27
March 2013
Uncertainty
convention 2
1
500
µmol/mo
l
3.0
2.0
%
Yes
Calibration
service
Approved on 27
March 2013
Uncertainty
convention 2
50
5000
µmol/mo
l
2
1
%
Yes
Calibration
services
Approved on 06
September 2012
Uncertainty
convention 2
1
100
mmol/m
ol
1.0
0.75
%
Yes
1
100
mmol/
mol
0.75
0.6
%
Yes
MRC 8633
Approved on 27
March 2013
Uncertainty
convention 2
10
200
mmol/m
ol
0.75
0.5
%
Yes
10
200
mmol/
mol
0.75
0.5
%
Yes
MRC 8897
Approved on 27
March 2013
Uncertainty
convention 2
300
50000
µmol/mo
l
1.0
0.6
%
Yes
300
50000
µmol/m
ol
1.0
0.6
%
Yes
MRC 8123
Approved on 27
March 2013
Uncertainty
convention 2
1
100
mmol/m
ol
1.0
0.75
%
Yes
1
100
mmol/
mol
0.75
0.6
%
Yes
MRC 8634
Approved on 27
March 2013
Uncertainty
convention 2
10
200
0.75
0.5
%
Yes
10
200
0.75
0.5
%
Yes
0.3
3.5
1.0
0.6
%
Yes
0.3
3.5
1.0
0.6
%
Yes
700
920
0.5
0.35
%
Yes
Calibration
service
Approved on 20
November 2014
Uncertainty
convention 2
5
70
1.0
0.7
%
Yes
5
100
1.0
0.75
%
Yes
30
70
2.0
2.0
%
Yes
Calibration
services
Approved on 20
November 2014
Uncertainty
convention 2
mmol/m
ol
mmol/m
ol
mmol/m
ol
mmol/m
ol
mmol/m
ol
µmol/mo
l
mmol/
mol
mmol/
mol
1/2
Calibration and Measurement Capabilities
Measurand
NMI
Service
Identifier
Measurement
Service SubCategory
Dissemination Range
of Measurement
Capability
Range of Expanded Uncertainties
as Disseminated
Range of Certified Values
in Reference Materials
Matrix
Range of Expanded Uncertainties for
Mechanism(s)
Certified Value
for
Measurement
Is the
Service
expanded
Delivery
From
To
Unit
uncertainty a
relative one?
Comment(s)
Comment(s)
MRC 8427
Approved on 20
November 2014
Uncertainty
convention 2
From
To
Unit
From
To
Unit
Is the
expanded
uncertainty a
relative one?
50
500
µmol/mo
l
2
1
%
Yes
10
200
mmol/m
ol
1.0
1.0
%
Yes
Calibration
service
Approved on 21
October 2015
10
200
mmol/m
ol
1.0
1.0
%
Yes
Calibration
service
Approved on 21
October 2015
100
1000
µmol/mo
l
1.0
1.0
%
Yes
Calibration
service
Approved on 21
October 2015
Uncertainty
convention 2
100
1000
µmol/mo
l
1.0
1.0
%
Yes
Calibration
service
Approved on 21
October 2015
Uncertainty
convention 2
50
500
µmol/mo
l
2
1
%
Yes
Calibration
services
Approved on 21
October 2015
Uncertainty
convention 2
30
1000
µmol/mo
l
2.0
0.6
%
Yes
30
1000
µmol/m
ol
2.0
0.6
%
Yes
MRC 8416
Approved on 21
October 2015
Uncertainty
convention 2
30
1000
µmol/mo
l
2.0
0.6
%
Yes
30
1000
µmol/m
ol
2.0
0.6
%
Yes
MRC 8936
Approved on 21
October 2015
Uncertainty
convention 2
700
980
mmol/m
ol
0.1
0.3
%
Yes
Calibration
service
Approved on 21
October 2015
Uncertainty
convention 1
ethane
5
100
0.6
0.6
%
Yes
propane
1
45
0.6
0.6
%
Yes
i-butane
0.5
10
0.8
0.8
%
Yes
n-butane
0.5
10
0.8
0.8
%
Yes
i-pentane
0.2
2
1.5
1.2
%
Yes
n-pentane
0.2
2
1.5
1.2
%
Yes
n-hexane
0.1
1.5
2.0
1.5
%
Yes
carbon
dioxide
5
70
0.5
0.5
%
Yes
5
100
1.0
1.0
%
Yes
Analyte or
Component
8427
Forensic
nitrogen
ethanol
8833d
Environmental
nitrogen
carbon
dioxide
8833f
Environmental
synthetic
air
carbon
dioxide
8833c
Environmental
nitrogen
carbon
dioxide
8833e
Environmental
synthetic
air
carbon
dioxide
8833i
Forensic
nitrogen
ethanol
8416a
Environmental
nitrogen
methane
8936a
Environmental
synthetic
air
methane
8833a
Fuel
synthetic
natural gas
methane
Quantity
Amount-ofsubstance
fraction
Amount-ofsubstance
fraction
Amount-ofsubstance
fraction
Amount-ofsubstance
fraction
Amount-ofsubstance
fraction
Amount-ofsubstance
fraction
Amount-ofsubstance
fraction
Amount-ofsubstance
fraction
Amount-ofsubstance
fraction
nitrogen
8833m
Environmental
nitrogen
methane
8833n
Environmental
synthetic
air
methane
Amount-ofsubstance
fraction
Amount-ofsubstance
fraction
The BIPM key comparison database, October 2015
mmol/m
ol
mmol/m
ol
mmol/m
ol
mmol/m
ol
mmol/m
ol
mmol/m
ol
mmol/m
ol
mmol/m
ol
mmol/m
ol
From
To
Unit
50
500
µmol/m
ol
2
1
%
Yes
10
20000 µmol/mo
0
l
1.0
0.75
%
Yes
Calibration
service
Approved on 21
October 2015
Uncertainty
convention 2
10
20000 µmol/mo
0
l
1.0
0.75
%
Yes
Calibration
service
Approved on 21
October 2015
Uncertainty
convention 2
2/2