Trends in the development of proficiency testing for chemical analysis: focus on food and environmental matrices

Olivares, Igor Renato Bertoni; Souza, G. B. de; Nogueira, A. R. de A.; Pacces, Vitor Hugo Polisel; Grizotto, Pamela Aparecida; Lima, Paula Souza da Silva Gomes; Bontempi, Rhaissa Mecca

doi:10.1007/s00769-021-01487-3

Cited by 4 publications

(2 citation statements)

References 34 publications

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“…Oprócz wspomnianych wcześniej celów PT/ILC związanych z procesem akredytacji, laboratoria uczestnicząc w PT/ILC identyfi kują problemy, wdrażają niezbędne działania korygujące i zapobiegawcze, zwiększają zaufanie do swoich działań wśród klientów, a także identyfi kują różnice w stosunku do innych laboratoriów uczestniczących w tych programach. Udział w PT/ILC pozwala też identyfi kować długoterminowe trendy (10,11). Potrzeba ciągłego utrzymania zaufania do prawidłowego działania laboratoriów ma dla nich i ich klientów istotne znaczenie (12).…”

Section: Udział W Badaniu Biegłości [Profi Ciency Testing -Pt] Lub Po...unclassified

“…In addition to the previously mentioned PT/ILC objectives related to the accreditation process, laboratories participating in PT/ILC identify problems, implement necessary corrective and preventive actions, increase trust in their actions among clients, and identify differences from other laboratories participating in these programs. Participation in PT/ILC also allows identifi cation of long-term trends (10,11).…”

Section: Introductionmentioning

confidence: 99%

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Assessment of the possibility of using the measurement of open time to assess and verify the constancy of performance of cementitious ceramic tile adhesives

Stancu¹,

Dębski²,

Michalak³

2022

Cement Wapno Beton

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The study analyzed the results of open time measurements of ceramic tile adhesives after not less than 30 minutes, obtained by 27 laboratories participating in the interlaboratory comparison program. The obtained results were statistically analyzed following the requirements of ISO 13528 and assessed under the z-score analysis criteria contained in the EN ISO/IEC 17043. 22 out of 24 laboratories that sent the results of the open time measurement confirmed their competencies, obtaining a “satisfactory” result following the evaluation criteria. The result obtained by one laboratory was classified as “questionable”, and another received the result as “unsatisfactory”. From the perspective of laboratories participating in interlaboratory comparisons, the obtained results should be assessed as satisfactory, and thus the laboratories confirm their competence. However, a wide scatter of the results of the open time measurement should be noted – 22 laboratories, the results of which were classified as “satisfactory”, obtained results from 0.1 N/mm2 to 1.0 N/mm2. Such a wide scatter of the results of open time measurements determined by the adhesion strength indicates that this method has too little accuracy, and it should not be used in the assessment and verification of constancy of performance of ceramic tile adhesives.

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Section: Udział W Badaniu Biegłości [Profi Ciency Testing -Pt] Lub Po...unclassified

Section: Introductionmentioning

confidence: 99%

Assessment of the possibility of using the measurement of open time to assess and verify the constancy of performance of cementitious ceramic tile adhesives

Stancu¹,

Dębski²,

Michalak³

2022

Cement Wapno Beton

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Application of Quality Statistical Tools for the Evaluation of Diagnostic Tests for SARS-CoV-2 Detection

Rodrigues

Olivares

2023

COVID-19 Metabolomics and Diagnosis

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Pilot Round of Proficiency Testing Scheme for Determination of Main Quality Characteristics of Oil Cake

Chechet¹,

Haidei²,

Ischenko³

et al. 2022

MOCA

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The new scheme of proficiency testing of laboratories for determination of main quality characteristics of oil cake was developed. In pilot round was determined such quality characteristics as moisture content (I), mass fraction of fat (II) and mass fraction of crude protein (III). The control sample was prepared from the sample of rapeseed oil cake. It was determined that control sample was sufficiently stable and homogeneous. In the round participated 22 laboratories, which used different test methods. The results were processed by the method described in ISO 13528. Based on these calculations as assigned value for characteristics I and III was chosen robust mean value and for characteristic II - mode of results. As standard deviation of proficiency testing for characteristic I was chosen robust standard deviation and for characteristics II and III was chosen value which is predicted by equation of Horwitz-Thompson. It was determined, that for characteristics I and III different test methods gives equivalent results, so some unsatisfactory results of laboratories can be attributed to laboratory bias. For characteristic II clustering of results according to measurement method in observed. It was established, that outdated standard GOST 13496.15-97 gives higher mass fraction of fat compared to other test methods.

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Trends in the development of proficiency testing for chemical analysis: focus on food and environmental matrices

Cited by 4 publications

References 34 publications

Assessment of the possibility of using the measurement of open time to assess and verify the constancy of performance of cementitious ceramic tile adhesives

Assessment of the possibility of using the measurement of open time to assess and verify the constancy of performance of cementitious ceramic tile adhesives

Application of Quality Statistical Tools for the Evaluation of Diagnostic Tests for SARS-CoV-2 Detection

Pilot Round of Proficiency Testing Scheme for Determination of Main Quality Characteristics of Oil Cake

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