CCQM-K48.2014
MEASURAND : Amount content of chloride in potassium chloride
NOMINAL VALUE : 13.4 mol/kg
Degrees of equivalence, Di and expanded uncertainty Ui (k = 2), expressed in relative terms
CCQM-K48.2014
MEASURAND : Amount content of chloride in potassium chloride
NOMINAL VALUE : 13.4 mol/kg
Degrees of equivalence, Di and expanded uncertainty Ui (k = 2), expressed in relative terms
Results are presented under A4 printable format in Summary Results (PDF file).
| Metrology area, Sub-field | Chemistry and Biology, Electrochemistry |
| Description | Chloride in KCl |
| Time of measurements | 2014 |
| Status | Approved for equivalence |
| Final Reports of the comparisons | |
| Measurand | Amount content of chloride in KCl |
| 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) |
| Comments | CCQM-K48.2014, Chloride in KCl, is a repeat of CCQM-K48. In was originally registered as CCQM-K114. Results published on 1 September 2016 Assay of potassium chloride
|
| Pilot institute |
NIM
National Institute of Metrology China |
| Contact person | MA LIANDI +86 10 642 23 987 |
| Pilot laboratory | |
|---|---|
| NIM |
National Institute of Metrology, China, APMP |
| 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 |
| KRISS |
Korea Research Institute of Standards and Science, Korea, Republic of, APMP |
| NIST |
National Institute of Standards and Technology, United States, SIM |
| NMIJ AIST |
National Metrology Institute of Japan, Japan, APMP |
| SMU |
Slovensky Metrologicky Ustav, Slovakia, EURAMET |
| VNIIFTRI |
Institute of Physical Technical and Radiotechnical Measurements, Rosstandart, Russian Federation, COOMET |
This page proposes print-out on A4 paper (portrait) of the comparison details (best printed out using a black and white printer).
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CCQM-K48.2014
MEASURAND : Amount content of chloride in potassium chloride
NOMINAL VALUE : 13.4 mol/kg
| The key comparison reference value, xR, is calculated as the median of all participant results, and its standard uncertainty, uR, is calculated as 1.858*[median(xi-xR)]*(n-1)-1/2 , where n represents the total number of participants and xi is the result of participant i. |
xR = 13.41311 mol/kg and uR = 0.00083 mol/kg
|
The degree of equivalence of laboratory i with respect to the key comparison reference value is given by a pair of terms: Di = (xi - xR)/xR and Ui, its expanded uncertainty (k = 2), Ui = [2(ui2 + uR2)1/2]/xR, both expressed in relative terms. |
CCQM-K48.2014
MEASURAND : Amount content of chloride in potassium chloride
NOMINAL VALUE : 13.4 mol/kg
xi : result of measurement carried out by laboratory i
ui : combined standard uncertainty of xi
