CCQM-K152

 

Assay of Potassium Iodate 

MEASURAND          Amount content of oxidants expressed as potassium iodate

NOMINAL VALUE        4.65 mol/kg

 

Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mol/kg.

Amount content
Di (mol/kg)
Participating institutes

CCQM-K152

 

Assay of Potassium Iodate 

MEASURAND          Mass fraction of iodine 

NOMINAL VALUE        0.59 kg/kg

 

Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in kg/kg.

Mass fraction
Di (kg/kg)
Participating institutes

CCQM-K152

 

Assay of Potassium Iodate 

MEASURAND          Amount content of oxidants expressed as potassium iodate

NOMINAL VALUE        4.65 mol/kg

 

Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mol/kg.

LABi Di Uneg,i Upos,i
mol/kg
mol/kg
mol/kg
INTI -0.0180 0.0110
TUBITAK UME -0.0074 0.0160
INMETRO -0.0023 0.0046
VNIIM-UNIIM -0.0006 0.0007
NMIJ -0.0005 0.0007
NIM 0.0005 0.0010
SMU 0.0005 0.0006
CENAM 0.0019 0.0021
Participating institutes
CCQM-K152

CCQM-K152

 

Assay of Potassium Iodate 

MEASURAND          Mass fraction of iodine 

NOMINAL VALUE        0.59 kg/kg

 

Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in kg/kg.

LABi Di Uneg,i Upos,i
kg/kg
kg/kg
kg/kg
INTI -0.00231 0.0014
TUBITAK UME -0.00096 0.0021
VNIIM-UNIIM -0.00005 0.0001
SMU 0.00005 0.0002
INMETRO 0.00007 0.0001
Participating institutes
CCQM-K152
Comparison
Comparison close
CC comparison
Linked comparison
CCQM-K152
Metrology area, Sub-field Chemistry and Biology, Inorganics
Description Assay of Potassium Iodate
Time of measurements 2019
Status Approved for equivalence
Final Reports of the comparisons
Measurand Mass fraction of iodine, kg/kg
Amount content of oxidants expressed as potassium iodate, mol/kg

From 0.592 kg/kg to 0.597 kg/kg
From 4.65 mol/kg to 4.68 mol/kg
 
Transfer device High purity potassium iodate sample
Comparison type Key Comparison
Consultative Committee CCQM (Consultative Committee for Amount of Substance)
Conducted by CCQM (Consultative Committee for Amount of Substance)
Pilot institute VNIIM
D.I. Mendeleyev Institute for Metrology, Rosstandart
Russian Federation
Contact person Alena Sobina
sobinaav@uniim.ru
+73432280012
First Name Last Name
wwww@ww.www +356719836 Institute 1 Institute 1 Khmelnitskiy
Pilot laboratory
VNIIM

D.I. Mendeleyev Institute for Metrology, Rosstandart, Russian Federation, COOMET

CENAM

Centro Nacional de Metrologia, Mexico, SIM

INMETRO

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

INTI

Instituto Nacional de Tecnologia Industrial, Argentina, SIM

NIM

National Institute of Metrology, China, APMP

NMIJ AIST

National Metrology Institute of Japan, Japan, APMP

SMU

Slovensky Metrologicky Ustav, Slovakia, EURAMET

UME

TÜBITAK Ulusal Metroloji Enstitüsü, Turkey, EURAMET

CCQM-K152

 

Assay of Potassium Iodate 

MEASURAND          Amount content of oxidants expressed as potassium iodate

NOMINAL VALUE        4.65 mol/kg

 

The key comparison reference value xR and its associated standard uncertainty uR are computed from a weighted mean of the reported results, INTI excluded.

 

        xR = 4.67194 mol/kg     uR = 0.00025 mol/kg

 

The degree of equivalence of laboratory i relative to the key comparison reference value xR is given by a pair of terms, both expressed in mol/kg:

Di = (xi - xR) and its expanded uncertainty Ui at a 95 % level of confidence where Ui = 2 ui.

CCQM-K152

 

Assay of Potassium Iodate 

MEASURAND          Mass fraction of iodine 

NOMINAL VALUE        0.59 kg/kg

 

The key comparison reference value xR and its associated standard uncertainty uR are computed from a weighted mean of the reported results, INTI excluded.

 

        xR = 0.592 91 kg/kg     uR = 0.000 05 kg/kg

 

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

Di = (xi - xR) and its expanded uncertainty Ui at a 95 % level of confidence where Ui = 2 ui.

CCQM-K152

 

Assay of Potassium Iodate 

MEASURAND          Amount content of oxidants expressed as potassium iodate

NOMINAL VALUE        4.65 mol/kg

 

xi   measured amount of content reported by laboratory iLabi

ui   combined standard uncertainty of xi

 

 

CCQM-K152

 

Assay of Potassium Iodate 

MEASURAND          Mass fraction of iodine 

NOMINAL VALUE        0.59 kg/kg

 

xi   measured mass fraction reported by laboratory iLabi

ui   combined standard uncertainty of xi