Comparison of different approaches used for the interpretation and presentation of PT results
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| 024 | 7 | 0 | |a 10.1007/s00769-015-1173-9 |2 doi |
| 035 | |a (NATIONALLICENCE)springer-10.1007/s00769-015-1173-9 | ||
| 245 | 0 | 0 | |a Comparison of different approaches used for the interpretation and presentation of PT results |h [Elektronische Daten] |c [Aida Jotanovic, Semsa Suljagic] |
| 520 | 3 | |a The laboratory for precious metals within the Institute of Metrology of Bosnia and Herzegovina acts as a state reference laboratory in the field of quality control of articles manufactured of precious metals, e.g. jewellery. It disseminates reference values through the organisation of proficiency testing (PT) schemes. Two separate PT schemes for the determination of mass fraction of gold in typical jewellery alloys were conducted in 2013 and 2014. Laboratories taking part in these PT schemes are affiliated to the National Metrology Institutes of several countries and two private goldsmith laboratories. Different approaches in the design of the PT schemes and the evaluation of the PT results were used with the purpose of exploring their features regarding the interpretation of the results. For PT.13, z-scores were used as laboratory performance indicators. The assigned value and the standard deviation for proficiency assessment were calculated from the results of the participating laboratories by applying robust statistic. z-score and z′-score were used as performance indicators for the scheme PT.14, and the assigned value of the test sample and its measurement uncertainty were determined by the PT provider. The standard deviation of the testing method of 0.5mg/g as prescribed in ISO 11426 as fit for purpose in the field of interest is used as standard deviation for proficiency assessment σ p. By comparing the z-scores and z′-scores assigned to the PT.14 results, it is evident that the measurement uncertainty of the assigned value provided by the PT provider does not affect the overall successfulness of the participants. The Q-score based on relative deviation was used as an alternative approach to identify future partners in PT schemes with the purpose of reference value assignment (Q≤0.05). | |
| 540 | |a Springer-Verlag Berlin Heidelberg, 2015 | ||
| 690 | 7 | |a PT schemes |2 nationallicence | |
| 690 | 7 | |a Assigned value |2 nationallicence | |
| 690 | 7 | |a z -score |2 nationallicence | |
| 690 | 7 | |a z ′-score |2 nationallicence | |
| 690 | 7 | |a Q -score |2 nationallicence | |
| 690 | 7 | |a Gold alloy |2 nationallicence | |
| 700 | 1 | |a Jotanovic |D Aida |u Institute of Metrology of Bosnia and Herzegovina - IMBIH, Dolina 6, Sarajevo, Bosnia and Herzegovina |4 aut | |
| 700 | 1 | |a Suljagic |D Semsa |u Institute of Metrology of Bosnia and Herzegovina - IMBIH, Dolina 6, Sarajevo, Bosnia and Herzegovina |4 aut | |
| 773 | 0 | |t Accreditation and Quality Assurance |d Springer Berlin Heidelberg |g 20/5(2015-10-01), 395-399 |x 0949-1775 |q 20:5<395 |1 2015 |2 20 |o 769 | |
| 856 | 4 | 0 | |u https://doi.org/10.1007/s00769-015-1173-9 |q text/html |z Onlinezugriff via DOI |
| 898 | |a BK010053 |b XK010053 |c XK010000 | ||
| 900 | 7 | |a Metadata rights reserved |b Springer special CC-BY-NC licence |2 nationallicence | |
| 908 | |D 1 |a research-article |2 jats | ||
| 949 | |B NATIONALLICENCE |F NATIONALLICENCE |b NL-springer | ||
| 950 | |B NATIONALLICENCE |P 856 |E 40 |u https://doi.org/10.1007/s00769-015-1173-9 |q text/html |z Onlinezugriff via DOI | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Jotanovic |D Aida |u Institute of Metrology of Bosnia and Herzegovina - IMBIH, Dolina 6, Sarajevo, Bosnia and Herzegovina |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Suljagic |D Semsa |u Institute of Metrology of Bosnia and Herzegovina - IMBIH, Dolina 6, Sarajevo, Bosnia and Herzegovina |4 aut | ||
| 950 | |B NATIONALLICENCE |P 773 |E 0- |t Accreditation and Quality Assurance |d Springer Berlin Heidelberg |g 20/5(2015-10-01), 395-399 |x 0949-1775 |q 20:5<395 |1 2015 |2 20 |o 769 | ||