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The comparison of flow rate calibration methods for high-performance liquid chromatography (HPLC) pump Accredit. Qual. Assur. (IF 0.9) Pub Date : 2024-03-15 Prangtip Uthaiwat, Theera Leeudomwong, Tassanai Sanponpute
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Certification of a novel matrix reference material for accurate measurements of aflatoxin M1 in milk powder Accredit. Qual. Assur. (IF 0.9) Pub Date : 2024-03-13 Chun Yuan Huang, Ya Xuan Liu, Jian Zhou, Ming Wang, Meng Rui Yang, Hui Liu, Fukai Li, Liyuan Zhang
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Measurement uncertainty from sampling and its role in validation of measurement procedures Accredit. Qual. Assur. (IF 0.9) Pub Date : 2024-03-08 Michael H. Ramsey, Peter D. Rostron
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Accreditation of medical laboratories: What is new in ISO 15189:2022 Accredit. Qual. Assur. (IF 0.9) Pub Date : 2024-02-21
Abstract In this paper, the main changes in ISO 15189:2022 in comparison with the 2012 version are discussed. They affect, directly or indirectly, the actions of medical laboratories towards ensuring validity and accuracy of examination results. A main change refers to the structure that is now aligned with ISO/IEC 17025 and recent editions of other standards in the ISO 17000 series. Further to this
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Ten years of an external quality program control in clinical microbiology: a statistical analysis of the results Accredit. Qual. Assur. (IF 0.9) Pub Date : 2024-02-21 Clara Morales, Martha Uzeta, Mabel Ramírez, Ramón Giraldo
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S-score: a new score for binary qualitative proficiency testing schemes interpretable as the z-score Accredit. Qual. Assur. (IF 0.9) Pub Date : 2024-02-18 Christian Baudry, Gaëlle Jadé, Paul Rayneau, Bertrand Lombard, Max Feinberg, Michel Laurentie
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Investigation of the effect of antioxidant-added skin care creams on UV-B-induced oxidation in skin simulation environment by spectroscopic and chromatographic analyses Accredit. Qual. Assur. (IF 0.9) Pub Date : 2024-02-12 Temel Kan Bakır, Hüseyin Kastrati
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Insights on the validation of alternative tools for water quality monitoring: the case of on-site test kits, portable devices and continuous measuring devices Accredit. Qual. Assur. (IF 0.9) Pub Date : 2024-02-08 Nathalie Guigues, Emrah Uysal, Sandrine Raveau, Jérémie Magar, Gabriel Billon, Joonas Kahiluoto, Rudolf J. Schneider, Lokman Liv, Serap Gençtürk Tosun, Gaëlle Canteau, Béatrice Lalere
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Measurement uncertainty of blood alcohol concentration (BAC) by headspace gas chromatography: comparison of different strategies Accredit. Qual. Assur. (IF 0.9) Pub Date : 2024-02-06
Abstract Analysis of blood alcohol concentration (BAC) is a routine analysis performed in many forensic laboratories. As BAC results are usually contested in court, measurement uncertainty (MU) becomes a critical topic. This contribution reports the results of an investigation of the major sources of uncertainty affecting BAC determinations and compares two different approaches to the quantification
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Use of the Monte Carlo method for the estimation of measurement uncertainty in chemical analysis systems with intensive mathematical treatment Accredit. Qual. Assur. (IF 0.9) Pub Date : 2024-02-05
Abstract In recent years, the scientific community has made great efforts to establish procedures for the estimation of uncertainty in various measurement processes in laboratories. In this regard, the Guide to the Expression of Uncertainty in Measurement has been one of the most widely used documents for the estimation of uncertainty values in measurement processes. In spite of its success, the linear
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Residue behavior and consumer risk assessment of combination product of betacyfluthrin and imidacloprid on cucumber (Cucumis sativus L.) Accredit. Qual. Assur. (IF 0.9) Pub Date : 2024-02-02 Sakshi Sharma, Jatiender Kumar Dubey, Sapna Katna, Ajay Sharma, Deepika Shandil, Pankaj Sharma, Nisha Devi, Arvind Kumar, Shubhra Singh, Nimisha Thakur
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Comparative analysis of the skin surface lipids between acne patients and controls using UFLC method Accredit. Qual. Assur. (IF 0.9) Pub Date : 2024-01-23 M. S. Walia, R. Vinutha, V. Shastry, J. Betkerur, B. M. Gurupadayya, H. Konala
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Systematic study on the variability in the gasoline sampling process at service stations and its contribution to the measurement variance Accredit. Qual. Assur. (IF 0.9) Pub Date : 2024-01-22 Jerson González-Hernández, Paola Fuentes-Schweizer
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Development of UME CRM 1008: certified reference material for C-reactive protein Accredit. Qual. Assur. (IF 0.9) Pub Date : 2024-01-12 Merve Oztug, Evren Saban, Meltem Asicioglu, Alper Isleyen, Muslum Akgoz
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Introduction and reflection on the revision of ISO/IEC 17043 Accredit. Qual. Assur. (IF 0.9) Pub Date : 2024-01-09 Sun Biyao, Tang Lingtian, He Ping
In May, 2023, the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC) published the international standard ISO/IEC 17043:2023 Conformity assessment—General requirements for the competence of proficiency testing providers. This article describes the 100 % online revision process from the perspective of the Working Group (WG) members, explains
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Quantification of antibiotics in imported and local broiler chickens using MS/Q-TOF: a study from Muscat Governorate Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-12-19 Sara Ali Al Fazari, Ahmed Abusham, Salem Said Jaroof Al-Touby, Waleed Khalid Hilal Al Rajhi, Yahya Bin Abdullah Alrashdi, Mohammad Amzad Hossain
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Simultaneous equation method for the estimation of gallic acid and apigenin by UV–visible spectrophotometry Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-12-15 Shweta Mevada, Harsha Patel, Saurabh Shukla
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Need for a protocol for performance evaluation of the gas analyzers used in biomethane conformity assessment Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-12-12 Karine Arrhenius, Lucy Culleton, Javis Nwaboh, Jianrong Li
Biomethane may contain trace components that can have adverse effects on gas vehicles performances and on the pipelines when injected in the gas grid. Biomethane quality assurance against specifications is therefore crucial for the integrity of the end-users’ appliances. Analytical methods used to assess biomethane conformity assessment must be validated properly and possibly, new methods specifically
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Development of new metrology methods for determining major elements in solid biofuels ash and establishment of results’ traceability Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-12-03 Katarina Hafner-Vuk, Dijana Ćorić, Milica Krajišnik
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Development of Certified Reference Materials of Trace Elements in Gold Solution (GBW02797–GBW02800) Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-11-16 Jianying Zhang, Yanjie Cui, Tao Zhou, Jinzhuan Wang, Zanfang Zhu, Fangmei Liu, Guangyang Xiao, Jing Yu, Xinlei Wang, Boling Huang, Chun Li, Xingjiao Huang
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Estimation of uncertainty from duplicate measurements: new quantification procedure in the case of concentration-dependent precision Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-10-31 Václav Synek, Sylvie Kříženecká
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Development of benzene, toluene, ethyl benzene, m-xylene, p-xylene and o-xylene (BTEX) gas reference standards for air pollution monitoring in South Africa Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-09-25 Napo Ntsasa, James Tshilongo, Nompumelelo Leshabane, Mudalo Jozela, Goitsemang Lekoto, Patricia Forbes
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Improvement of the quality of analytical results generated by GC/MS method for characterization of Helichrysum italicum (Roth) G. Don essential oil Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-09-19 Katarina Hafner-Vuk, Vladimir Milojević, Monia Avdić, Jasmin Kevrić, Milica Krajišnik
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A case study for in-house method validation of gas chromatography technique using class-1 calibration gas mixtures for greenhouse gases monitoring Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-09-15 Komal, Daya Soni, Shankar G. Aggarwal
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Certification and long-term stability of bromate ion standard solution Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-09-19 Toshiaki Asakai
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Quantitative 1H NMR methodology for purity assay with high accuracy Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-09-13 Tongtong Wang, Quanhui Liu, Min Wang, Jian Zhou, Mengrui Yang
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The principles of good laboratory practices in biotechnology: multicriteria decision aid (MCDA) as an innovative model for transferring knowledge Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-07-24 Elisa Rosa dos Santos, Evaldo Cesar Cavalcante Rodrigues, José Mauro Granjeiro
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Assessment of liquids homogeneity in storage tanks in the oil industry through the comparison of uncertainties Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-07-11 Elcio Cruz de Oliveira
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RP-HPLC-DAD method development and validation of L-lysine hydrochloride: application to bulk drug substance and multivitamin oral suspension Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-07-09 P. R. Hemanth Vikram, Narasimha M. Beeraka, Hitesh B. Patel, Pramod Kumar
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An empirical examination of ISO 9001’s influence on sustained success of companies Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-07-09 M Chukri Idris, Alptekin DURMUŞOĞLU
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Study of the shutting effect of a liquid thermostat during measurements using a two-electrode electrolytic cell Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-06-29 D. V. Meleshchuk
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Proficiency testing interpretation based on analysis of variance method Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-06-29 Luiz Henrique da Conceição Leal, Marcelo Lima Alves, Werickson Fortunato de Carvalho Rocha
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Identifying risk management challenges in laboratories Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-05-12 Evdoxia Tziakou, Argyro G. Fragkaki, Agapios Ν. Platis
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The conception and initial years of a quality management system based on ISO/IEC 17025: an action research Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-05-11 Laura Neves de Jesus, Ricardo Batista Penteado, Fernando Costa Malheiros, Lucio Abimael Medrano Castillo, Luís Fernando Magnanini de Almeida
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From VIM3 toward the next edition of the International Vocabulary of Metrology Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-04-19 Franco Pavese
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Design and implementation of electronic reference material document system Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-04-17 Wang Bin, Ma Liandi, Lu Xiaohua
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Evaluation of the 1R6F certified reference cigarette for proficiency testing of mainstream smoke parameters Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-03-13 Stacey Slone, C. Ruth McNees, Matt Craft, Huihua Ji, Andrew Shearer, Brent Shelton, Ling Yuan, Orlando Chambers
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Paul De Bievre down under: practical metrology in chemistry and its principles Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-03-04 Gary Price
Paul De Bievre interacted with the Australian national measurement system in the 1990s as it developed its chemical measurement system infrastructure. It was a fruitful and stimulating time when practical measurement—weights and measures in its modern forms—mixed with the ideas of metrology in chemistry. Among the issues discussed were accreditation, a new journal called accreditation and quality assurance
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Laboratory glassware cleaning validation in pharmaceutical industry: a case study Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-02-06 Linda Belgacem, Redouane Amine Cherif
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On the optimal use of silver–silver chloride reference electrodes Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-02-07 Igor Maksimov, Toshiaki Asakai, Masaki Ohata
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Development of certified reference materials of ethanol in aqueous solution resulting from the participation of GUM in EMPIR 16RPT02 ALCOREF project Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-01-27 Piotr Janko, Ewa Malejczyk, Michał Nawotka
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Establishment of Cryptococcus neoformans and C. gattii as certified reference materials according to the requirements of ISO 17034:2016 Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-01-24 Aline da Silva Soares Souto, Carlos Roberto Sobrinho do Nascimento, Carla de Oliveira Rosas, Marilia Martins Nishikawa, Maria Helena Simões Villas Bôas, Manuela da Silva
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Indonesian proficiency testing for electrolytic conductivity measurement of synthetic wastewater: a comparison of performance evaluation based on four standardized performance statistics Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-01-18 Fransiska Sri Herwahyu Krismastuti, Nuryatini Hamim, Ayu Hindayani
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Some pitfalls in the uncertainty evaluation of isotope delta reference materials Accredit. Qual. Assur. (IF 0.9) Pub Date : 2023-01-11 Manfred Gröning
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On testing of the homogeneity of variances for two-side power distribution family Accredit. Qual. Assur. (IF 0.9) Pub Date : 2022-12-13 A. V. Stepanov, A. G. Chunovkina
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Complying with the resource requirements of ISO/IEC 17025:2017 in Indonesian calibration and testing laboratories: current challenges and future directions Accredit. Qual. Assur. (IF 0.9) Pub Date : 2022-10-19 Fransiska Sri Herwahyu Krismastuti, Muhammad Haekal Habibie
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The units of rate constants in chemical kinetics Accredit. Qual. Assur. (IF 0.9) Pub Date : 2022-10-11 Jeremy Frey, Timothy J. Wallington, Richard Hartshorn, Martin Quack, Pascal Heus, Steven Emmerson
This short article discusses the units of rate constants as used in chemical kinetics and, in particular, the aspect of non-integral powers of base units, which some might find unusual for units in the SI system. In many ways the fact that the units of the rate constants as usually defined convey information about the order of the reaction or reactions involved is very useful, but in other ways having
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Development of a certified reference material for benzo[a]pyrene and benz[a]anthracene in olive oil Accredit. Qual. Assur. (IF 0.9) Pub Date : 2022-09-30 Ting Lu, Ee Mei Gui, Juan Wang, Pui Sze Cheow, Tang Lin Teo, Tong Kooi Lee
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A new methodology for proficiency testing scheme interpretation based on residual analysis Accredit. Qual. Assur. (IF 0.9) Pub Date : 2022-09-19 Luiz Henrique da Conceição Leal, Fernando Gustavo Marques Violante, Lucas Junqueira de Carvalho, Bruno Carius Garrido, Eliane Cristina Pires do Rego, Gabriel Fonseca Sarmanho, Werickson Fortunato de Carvalho Rocha
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Purity analysis of 4-bromodiphenyl ether for reference materials Accredit. Qual. Assur. (IF 0.9) Pub Date : 2022-09-12 Ling Chen, Zhipeng Liu, Jinyan Zhou, Siting Luo, Junbin Xu, Yanjie Huang, Zerong Liao
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Risk management approach for testing and calibration laboratories Accredit. Qual. Assur. (IF 0.9) Pub Date : 2022-09-12 Michelly Karoline Alves Santana, Geilson Loureiro
In the latest revision of the ISO/IEC 17025 standard, General requirements for the competence of testing and calibration laboratories, published in 2017, the concept of risk-based thinking was introduced in its requirements. Although the new version introduces the concept, procedures to be adopted for the implementation of risk management in testing and calibration laboratories are not addressed. The
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Allergenic proteins in wine: an overview of results obtained from proficiency-tests Accredit. Qual. Assur. (IF 0.9) Pub Date : 2022-09-09 Caterina Mazzoni, Anne Tirard, Abdelkader Boubetra
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Consistency plots: a simple graphical tool for investigating agreement in key comparisons Accredit. Qual. Assur. (IF 0.9) Pub Date : 2022-09-05 Stephen L. R. Ellison
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Validation and measurement uncertainty of rapid and simultaneous determination of 19 elements in drinking water using ICP-MS Accredit. Qual. Assur. (IF 0.9) Pub Date : 2022-09-02 Shady A. Ismail, Ahmed S. Afify
A sensitive, rapid and reliable method was developed and validated for the quantitative determination of 19 elements (31 elemental isotopes) in drinking water using inductively coupled plasma–mass spectrometry. A commercial drinking water matrix was used for conducting method validation in terms of selectivity, limit of detection, limit of quantification, sensitivity, linearity, working range, trueness
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Impact of the COVID-19 pandemic on accredited conformity assessment bodies: insights from a multinational study Accredit. Qual. Assur. (IF 0.9) Pub Date : 2022-08-29 Claudia Koch, Parsa Asna Ashari, Mona Mirtsch, Knut Blind, Pavel Castka
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Quality- from adequacy to fitness for purpose Accredit. Qual. Assur. (IF 0.9) Pub Date : 2022-07-20 M. Filomena Camões
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Efficient delivery of metrological services by institutes through accuracy-based proficiency testing programme on additives in food sauce for laboratories in the Southeast Asian region Accredit. Qual. Assur. (IF 0.9) Pub Date : 2022-07-16 Pui Sze Cheow, Tang Lin Teo, Thippaya Junvee Fortune, Benilda Sacop Ebarvia, Siti Nur Nazathul Shima Hashim, Dyah Styarini, Juan Wang, Ee Mei Gui, Ting Lu, Thanarak Mungmeechai, Pradthana Tangtrirat, Aaron Dacuya, April Rose Veranga, Grace Amandy, Hui Ling Li, Yosi Aristiawan, Christine Elishian, Ayu Hindayani
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Expression for uncertainty intervals handling skewness when the relative standard uncertainty is independent of the measurand level Accredit. Qual. Assur. (IF 0.9) Pub Date : 2022-07-16 Eskil Sahlin, Bertil Magnusson
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Bilateral comparison of primary reference materials (PRMs) containing methanol, ethanol and acetone in nitrogen Accredit. Qual. Assur. (IF 0.9) Pub Date : 2022-07-15 D. R. Worton, S. Moreno, P. J. Brewer, J. Li, A. Baldan, A. M. H. van der Veen
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Uncertainty of measurement of pesticide residues in vegetable products: application of alternative approaches based on quality control data for multi/single residue methods Accredit. Qual. Assur. (IF 0.9) Pub Date : 2022-07-14 Danilo Attard Barbini, Silvana Girolimetti, Patrizia Stefanelli