MEASURAND : Mass fraction of lead in lead-free solder Degrees of equivalence Di and expanded uncertainty Ui (k = 2) expressed in mg/kg Degrees of equivalence expressed in relative terms
NOMINAL VALUE: 200 mg/kg
MEASURAND : Mass fraction of lead in lead-free solder Degrees of equivalence Di and expanded uncertainty Ui (k = 2) expressed in mg/kg Degrees of equivalence expressed in relative terms
NOMINAL VALUE: 200 mg/kg
Results are presented under A4 printable format in Summary Results (PDF file).
| Metrology area, Sub-field | Chemistry and Biology, Inorganics |
| Description | Determination of lead in lead-free solder containing silver and copper |
| Time of measurements | 2010 |
| Status | Approved for equivalence |
| Final Reports of the comparisons | |
| Measurand | Mass fraction of lead: 100 mg/kg to 600 mg/kg |
| 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 | Results published on 04 December 2012 Mass fraction of lead in lead-free solder |
| Pilot institute |
NMIJ AIST
National Metrology Institute of Japan Japan |
| Contact person | A. Hioki +81 29 861 9341 |
| Additional |
| Pilot laboratory | |
|---|---|
| NMIJ AIST |
National Metrology Institute of Japan, Japan, APMP |
| BAM |
Bundesanstalt für Materialforschung und -prüfung, Germany, 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 |
| NIM |
National Institute of Metrology, China, APMP |
| NIST |
National Institute of Standards and Technology, United States, SIM |
| NRC |
National Research Council, Canada, SIM |
| PTB |
Physikalisch-Technische Bundesanstalt, Germany, EURAMET |
| VNIIM |
D.I. Mendeleyev Institute for Metrology, 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).
Please, select items to be printed out, then click on "OK" :
MEASURAND : Mass fraction of lead in lead-free solder
The key comparison reference value, xR, and its standard uncertainty, uR, are calculated as explained on page7 of the Final Report. xR = 197.2 mg/kg and UR= 2uR = 0.9 mg/kg
NOMINAL VALUE: 200 mg/kg
The degree of equivalence of each laboratory i with respect to the key comparison reference value is given by a pair of terms: Di = (xi - xR) and Ui, its expanded uncertainty (k = 2) that is calculated as explained on page 8 of the Final Report.
The degrees of equivalence are also given in relative terms.
No pair-wise degrees of equivalence are computed here.
MEASURAND : Mass fraction of lead in lead-free solder
NOMINAL VALUE: 200 mg/kg
xi : result of measurement carried out by laboratory i
ULab i : expanded uncertainty (k = 2) of xi, ULab i = 2ui
