Comparison Display

CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Mass fraction of bromide

Degrees of equivalence represented by D_i = (x_I - x_R) and its expanded uncertainty U_i at a 95 % level of confidence, both expressed in µg/g.

Mass fraction of bromide

D_i

Participating institutes

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CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Mass fraction of sulfate

Degrees of equivalence represented by D_i = (x_I - x_R) and its expanded uncertainty U_i at a 95 % level of confidence, both expressed in µg/g.

Mass fraction of sulfate

D_i

Participating institutes

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CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Mass fraction of lead

Degrees of equivalence represented by D_i = (x_I - x_R) and its expanded uncertainty U_i at a 95 % level of confidence, both expressed in µg/g.

Mass fraction of lead

D_i

Participating institutes

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CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Molar mass of lead

Degrees of equivalence represented by D_i = (x_I - x_R) and its expanded uncertainty U_i at a 95 % level of confidence, both expressed in g/mol.

Molar mass of lead

D_i

Participating institutes

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CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Amount fraction of Pb-204

Degrees of equivalence represented by D_i = (x_I - x_R) and its expanded uncertainty U_i at a 95 % level of confidence, both expressed in mol/mol.

Amount fraction of Pb-204

D_i

Participating institutes

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CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Amount fraction of Pb-206

Degrees of equivalence represented by D_i = (x_I - x_R) and its expanded uncertainty U_i at a 95 % level of confidence, both expressed in mol/mol.

Amount fraction of Pb-206

D_i

Participating institutes

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CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Amount fraction of Pb-207

Degrees of equivalence represented by D_i = (x_I - x_R) and its expanded uncertainty U_i at a 95 % level of confidence, both expressed in mol/mol.

Amount fraction of Pb-207

D_i

Participating institutes

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CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Amount fraction of Pb-208

Degrees of equivalence represented by D_i = (x_I - x_R) and its expanded uncertainty U_i at a 95 % level of confidence, both expressed in mol/mol.

Amount fraction of ²⁰⁸Pb

D_i

Participating institutes

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CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Mass fraction of bromide

Degrees of equivalence represented by D_i = (x_I - x_R) and its expanded uncertainty U_i at a 95 % level of confidence, both expressed in µg/g.

LAB_i	D_i	U_neg,i	U_pos,i
	µg/g	µg/g	µg/g
KRISS	-1.03	0.52
INTI	-1.01	0.32
TÜBITAK UME	-0.33	0.35
SMU	-0.21	0.77
NIMT	-0.21	0.28
SMU	-0.19	0.84
PTB	0.00	0.31
NIM	0.04	0.29
NRC	0.15	0.26
GUM	0.15	0.33
NMIJ AIST	0.20	0.34
CENAM	0.85	1.42

Participating institutes

CCQM-K122

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CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Mass fraction of sulfate

Degrees of equivalence represented by D_i = (x_I - x_R) and its expanded uncertainty U_i at a 95 % level of confidence, both expressed in µg/g.

LAB_i	D_i	U_neg,i	U_pos,i
	µg/g	µg/g	µg/g
CENAM	-0.45	0.67
KRISS	-0.31	0.32
PTB	-0.07	0.31
INTI	-0.04	0.37
NMIJ AIST	0.00	0.30
NIM	0.21	0.31
GUM	0.21	0.34
SMU	0.23	0.33
TÜBITAK UME	0.45	0.43

Participating institutes

CCQM-K122

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CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Mass fraction of lead

Degrees of equivalence represented by D_i = (x_I - x_R) and its expanded uncertainty U_i at a 95 % level of confidence, both expressed in µg/g.

LAB_i	D_i	U_neg,i	U_pos,i
	µg/g	µg/g	µg/g
SYKE	-0.0010	0.0007
TÜBITAK UME	-0.0002	0.0009
NRC	-0.0002	0.0006
NIM	-0.0001	0.0006
NMIJ AIST	0.0001	0.0003
BAM	0.0001	0.0003
PTB	0.0002	0.0008
KRISS	0.0005	0.0008

Participating institutes

CCQM-K122

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CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Molar mass of lead

Degrees of equivalence represented by D_i = (x_I - x_R) and its expanded uncertainty U_i at a 95 % level of confidence, both expressed in g/mol.

LAB_i	D_i	U_neg,i	U_pos,i
	g/mol	g/mol	g/mol
NMIJ AIST	-0.00050	0.00053
PTB	-0.00021	0.00031
BAM	-0.00016	0.00031
NIM	0.00000	0.00033
KRISS	0.00001	0.00072
SYKE	0.00010	0.00190
TÜBITAK UME	0.00020	0.00133

Participating institutes

CCQM-K122

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CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Amount fraction of Pb-204

Degrees of equivalence represented by D_i = (x_I - x_R) and its expanded uncertainty U_i at a 95 % level of confidence, both expressed in mol/mol.

LAB_i	D_i	U_neg,i	U_pos,i
	mol/mol	mol/mol	mol/mol
TÜBITAK UME	-0.00004	0.00005
NMIJ AIST	-0.00001	0.00001
BAM	0.00000	0.00001
PTB	0.00000	0.00001
KRISS	0.00000	0.00001
NIM	0.00001	0.00019
SYKE	0.00013	0.00016

Participating institutes

CCQM-K122

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CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Amount fraction of Pb-206

Degrees of equivalence represented by D_i = (x_I - x_R) and its expanded uncertainty U_i at a 95 % level of confidence, both expressed in mol/mol.

LAB_i	D_i	U_neg,i	U_pos,i
	mol/mol	mol/mol	mol/mol
NIM	-0.0001	0.0002
KRISS	-0.0001	0.0003
TÜBITAK UME	-0.0001	0.0005
BAM	0.0000	0.0002
PTB	0.0000	0.0002
NMIJ AIST	0.0002	0.0003
SYKE	0.0006	0.0013

Participating institutes

CCQM-K122

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CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Amount fraction of Pb-207

Degrees of equivalence represented by D_i = (x_I - x_R) and its expanded uncertainty U_i at a 95 % level of confidence, both expressed in (unit).

LAB_i	D_i	U_neg,i	U_pos,i
	mol/mol	mol/mol	mol/mol
NMIJ AIST	-0.00006	0.00012
TÜBITAK UME	-0.00001	0.00054
BAM	0.00000	0.00013
PTB	0.00000	0.00013
KRISS	0.00009	0.00014
NIM	0.00012	0.00016
SYKE	0.00029	0.00101

Participating institutes

CCQM-K122

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CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Amount fraction of Pb-208

Degrees of equivalence represented by D_i = (x_I - x_R) and its expanded uncertainty U_i at a 95 % level of confidence, both expressed in mol/mol.

LAB_i	D_i	U_neg,i	U_pos,i
	mol/mol	mol/mol	mol/mol
SYKE	-0.00109	0.00150
NMIJ AIST	-0.00014	0.00014
PTB	-0.00002	0.00012
NIM	0.00000	0.00015
BAM	0.00000	0.00012
KRISS	0.00004	0.00021
TÜBITAK UME	0.00012	0.00079

Participating institutes

CCQM-K122

Comparison

Comparison close

CCQM-K122

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Information & contact
Participants

Metrology area, Sub-field	Chemistry and Biology, Inorganics
Description	Anionic impurities (Bromide, Sulfate) and Lead in salt solutions
Time of measurements	2014
Status	Approved for equivalence

Final Reports of the comparisons	Metrologia 2020 57 Tech. Suppl. 08012
Measurand	Mass fraction of Bromide, Sulfate and Lead in the sample
Transfer device	Dedicated samples

Comparison type	Key Comparison
Consultative Committee	CCQM (Consultative Committee for Amount of Substance)
Conducted by	CCQM (Consultative Committee for Amount of Substance)
Pilot institute	PTB Physikalisch-Technische Bundesanstalt Germany
Contact person	Olaf Rienitz +49 531 592 3110

Pilot laboratory
PTB	Physikalisch-Technische Bundesanstalt, Germany, EURAMET

BAM	Bundesanstalt für Materialforschung und -prüfung, Germany, EURAMET

CENAM

Centro Nacional de Metrologia, Mexico, SIM

GUM	Glowny Urzad Miar, Central Office of Measures, Poland, EURAMET

INMETRO

Instituto Nacional de Metrologia, Qualidade e Tecnologia, Brazil, SIM

INTI	Instituto Nacional de Tecnologia Industrial, Argentina, SIM

KRISS

Korea Research Institute of Standards and Science, Korea, Republic of, APMP

MIKES-SYKE

Finnish Environment Institute, Finland, EURAMET

NIM	National Institute of Metrology, China, APMP

NIMT	National Institute of Metrology (Thailand), Thailand, APMP

NMIJ AIST

National Metrology Institute of Japan, Japan, APMP

NRC	National Research Council, Canada, SIM

SMU	Slovensky Metrologicky Ustav, Slovakia, EURAMET

UME	TÜBITAK Ulusal Metroloji Enstitüsü, Türkiye, EURAMET

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CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Mass fraction of bromide

The key comparison reference value x_R and its associated standard uncertainty u_R are determined from the median.

The degree of equivalence of laboratory i relative to the key comparison reference value x_R is given by a pair of terms, both expressed in the same unit:

D_i = (x_i - x_R) and its expanded uncertainty U_i at a 95 % level of confidence.

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CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Mass fraction of sulfate

The key comparison reference value x_R and its associated standard uncertainty u_R are determined from the median.

The degree of equivalence of laboratory i relative to the key comparison reference value x_R is given by a pair of terms, both expressed in the same unit:

D_i = (x_i - x_R) and its expanded uncertainty U_i at a 95 % level of confidence.

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CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Mass fraction of lead

The key comparison reference value x_R and its associated standard uncertainty u_R are determined from the median.

The degree of equivalence of laboratory i relative to the key comparison reference value x_R is given by a pair of terms, both expressed in the same unit:

D_i = (x_i - x_R) and its expanded uncertainty U_i at a 95 % level of confidence.

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CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Molar mass of lead

The key comparison reference value x_R and its associated standard uncertainty u_R are determined from the median.

The degree of equivalence of laboratory i relative to the key comparison reference value x_R is given by a pair of terms, both expressed in the same unit:

D_i = (x_i - x_R) and its expanded uncertainty U_i at a 95 % level of confidence.

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CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Amount fraction of Pb-204

The key comparison reference value x_R and its associated standard uncertainty u_R are determined from the median.

The degree of equivalence of laboratory i relative to the key comparison reference value x_R is given by a pair of terms, both expressed in the same unit:

D_i = (x_i - x_R) and its expanded uncertainty U_i at a 95 % level of confidence.

print out

CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Amount fraction of Pb-206

The key comparison reference value x_R and its associated standard uncertainty u_R are determined from the median.

The degree of equivalence of laboratory i relative to the key comparison reference value x_R is given by a pair of terms, both expressed in the same unit:

D_i = (x_i - x_R) and its expanded uncertainty U_i at a 95 % level of confidence.

print out

CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Amount fraction of Pb-207

The key comparison reference value x_R and its associated standard uncertainty u_R are determined from the median.

The degree of equivalence of laboratory i relative to the key comparison reference value x_R is given by a pair of terms, both expressed in the same unit:

D_i = (x_i - x_R) and its expanded uncertainty U_i at a 95 % level of confidence.

print out

CCQM-K122

SUBJECT Anionic impurities and lead in salt solutions

MEASURAND Amount fraction of Pb-208

The key comparison reference value x_R and its associated standard uncertainty u_R are determined from the median.

The degree of equivalence of laboratory i relative to the key comparison reference value x_R is given by a pair of terms, both expressed in the same unit:

D_i = (x_i - x_R) and its expanded uncertainty U_i at a 95 % level of confidence.