TY - JOUR A1 - Boley, N. A1 - van der Veen, A.M.H. A1 - Robouch, P. A1 - Golze, Manfred A1 - van de Kreeke, Johannes A1 - Örnemark, U. A1 - Tylee, B. T1 - Comparability of PT schemes - what did we learn from COEPT? N2 - Abstract The use of proficiency testing schemes (PTS) by laboratories as an integral part of their quality system has been increasing in recent years. Accreditation bodies, regulators and the laboratories’ customers are increasingly using results from PTS in their relationship with laboratories. There are many PTS available in Europe in analytical chemistry; EPTIS indicates over 400. The comparability of these PTS is now a real issue, as many organisers of PTS move into new markets. The COEPT project has systematically demonstrated (in four technical sectors – water, soil, food and occupational hygiene), that there are many similarities between PTS in each sector. For example, nearly all use the z-score as a performance index. One significant difference between many PTS is the value used for the term s in the z-score equation, and this gives a range of evaluations for the same data point. Despite this, the agreement between PTS in the same sector for the evaluation of data is approximately 85%. COEPT has given us a basis for establishing the comparability of PTS and showing us where further harmonisation could occur. KW - Proficiency testing KW - Comparability KW - Harmonisation PY - 2006 SN - 0949-1775 SN - 1432-0517 VL - 11 IS - 8-9 SP - 391 EP - 399 PB - Springer CY - Berlin AN - OPUS4-14162 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - van de Kreeke, Johannes T1 - COMAR, where do you go? N2 - Currently BAM is undertaking efforts to recode the COMAR database and redefine its profile. These efforts are explained and placed into the broader perspective of the international RM market. T2 - REFERENCE MATERIALS IN MEASUREMENT AND TECHNOLOGY CY - Yekaterinburg, Russian Federation DA - 11.09.2018 KW - Reference materials KW - Proficiency testing KW - COMAR KW - EPTIS KW - RM and PT PY - 2018 AN - OPUS4-46175 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - van de Kreeke, Johannes T1 - COMAR database: current efforts N2 - Currently BAM is making efforts to recode COMAR, the database for CRMs and reshape its profile as a database intended for qualitatively top-of-the-market CRMs. These efforts are highlighted and placed into the broad perspective of the international RM markets. A link to EPTIS, the database for PT schemes as a blueprint for the recoding is provided. T2 - BERM-15: International Symposium on Biological and Environmental Reference Materials CY - Berlin, Germany DA - 24.09.2018 KW - Reference materials KW - Proficiency testing KW - COMAR KW - EPTIS KW - RM and PT PY - 2018 AN - OPUS4-46179 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - van de Kreeke, Johannes T1 - EPTIS presentation for CNAS and RMPT workshop, Beijing 2016 N2 - Introduction to EPTIS for Chinese and regional audience T2 - RMPT workshop 2016 CY - Beijing, China DA - 20.09.2016 KW - EPTIS KW - Ringversuche KW - Proficiency testing KW - PT KW - ILC PY - 2016 AN - OPUS4-39004 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - van de Kreeke, Johannes T1 - CEN/CENELEC - EU project Western Balkans N2 - The presentation provides an introduction to the field of PT. (1) BAM activities on PT, (2) What is PT, (3) PT statistics, (4) Get started yourself. T2 - PT for Western Balkan countries CY - Berlin, Germany DA - 26.06.2017 KW - Proficiency testing KW - Interlaboratory comparisons KW - Round robins PY - 2017 AN - OPUS4-40871 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Örnemark, U. A1 - Fostel, H. A1 - Straub, R. A1 - van de Kreeke, Johannes T1 - Policies, requirements and surveys concerning frequency for participation in proficiency testing schemes N2 - This paper focuses on policies and requirements concerning the frequency for participation in proficiency testing (PT) and provides an overview of the frequency for which PT activities are offered in 25 testing fields. Recent international surveys are summarised. KW - Proficiency testing KW - External quality assessment KW - Frequency KW - Accreditation KW - Policy documents KW - Eptis PY - 2004 DO - https://doi.org/10.1007/s00769-004-0858-2 SN - 0949-1775 SN - 1432-0517 IS - 9 SP - 729 EP - 732 PB - Springer CY - Berlin AN - OPUS4-5198 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -