Accreditation and Quality Assurance

Article	Citations
A new methodology for proficiency testing scheme interpretation based on residual analysis	13
Preparation of matrix reference material of aflatoxin M1 in milk powder	12
Is harmonisation of performance assessment in non-quantitative proficiency testing possible/necessary?	11
Paradox? What paradox?	10
Identification key for selection of the matrix type to which a sample belongs within the context of GMO analysis	10
Introduction and reflection on the revision of ISO/IEC 17043	7
Facing a shortage of the Latin letters for the prospective new SI symbols: alternative proposal for the new SI prefixes	7
Development of new metrology methods for determining major elements in solid biofuels ash and establishment of results’ traceability	7
Accreditation of medical laboratories: What is new in ISO 15189:2022	6
S-score: a new score for binary qualitative proficiency testing schemes interpretable as the z-score	6
The PT/EQA community finally meets again!	5
Proficiency testing in analytical chemistry, microbiology and laboratory medicine: discussions on current practice and future directions	5
Collusion or falsification of results in PT: why does it happen and how can it be prevented?	5
An ID-HPLC–MS/MS based candidate reference measurement procedure for the quantification of valproic acid in human serum	4
Association between blood lead levels and socio-demographic factors among outpatient children in Ningbo, China	4
Investigation of internal standard use for short-term drift correction in ICP-MS/MS	4
A practical two-step procedure for taking into account all available information (prior and current) about influence quantities in measurement uncertainty analysis	4
Assessment of homogeneity and stability of new reference material of passion-flower fruits for proficiency testing: Pesticide residues in purple passion fruit (Passiflora pinnatistipula)	4
The path to continual improvement and business excellence: compliance to ISO standards versus a business excellence approach	3
Implementation of ISO 17034 & Guide 34 in China	3
Certification of the total element mass fractions in UME EnvCRM 03 soil sample via a joint research project	3
Estimation of the error due to radial displacements in a conductivity cell (jones type)	3
GUM guidance on developing and using measurement models	3
Assessment of liquids homogeneity in storage tanks in the oil industry through the comparison of uncertainties	3
Paul De Bievre down under: practical metrology in chemistry and its principles	3

Allergenic proteins in wine: an overview of results obtained from proficiency-tests	3
Quality- from adequacy to fitness for purpose	3
Study of the shutting effect of a liquid thermostat during measurements using a two-electrode electrolytic cell	3
Development of a certified reference material for benzo[a]pyrene and benz[a]anthracene in olive oil	3
Investigation of oil and grease in surface soils of gas station, automobile repair workshop, urban, recreational area, and rural sites using FT-IR	2
The principles of good laboratory practices in biotechnology: multicriteria decision aid (MCDA) as an innovative model for transferring knowledge	2
Proficiency tests: a tool for improvement and testing analytical performance at Gamma-Ray Spectroscopy Laboratory	2
Proficiency tests for analysis of pesticide residues in kimchi cabbage and ginseng in South Korea from 2008 to 2020	2
Interlaboratory comparisons of chemical measurements: Quo Vadis?	2
Inter-comparability of analytical laboratories in quantifying polycyclic aromatic hydrocarbons collected from industrial emission sources	2
Use of the Monte Carlo method for the estimation of measurement uncertainty in chemical analysis systems with intensive mathematical treatment	2
Development of UME CRM 1008: certified reference material for C-reactive protein	2
Green metrics-based HPLC method for quantification of three antidiabetic drugs in tablet dosage form using Box–Behnken design	2
Promotion of metrological traceability through the provision of a metrologically traceable proficiency testing reference value for the mass fraction of benzoic acid in fish sauce	2
On the optimal use of silver–silver chloride reference electrodes	2
Proficiency test of SARS-CoV-2 Omicron variant detection in diagnostics samples by veterinary diagnostic laboratories	2
Uncertainty of measurement of pesticide residues in vegetable products: application of alternative approaches based on quality control data for multi/single residue methods	2
Development of certified reference materials of ethanol in aqueous solution resulting from the participation of GUM in EMPIR 16RPT02 ALCOREF project	2
An empirical study: The multidimensionality of the quality management in determining university research laboratories performance	2
Implementation of ISO 9001:2015: quality management system in the university by a verification method	2
A review of proficiency exercises offered by the Veterinary Laboratory Investigation and Response Network (Vet-LIRN) and Moffett Proficiency Testing Laboratory from 2012 to 2018	2
Points to consider when establishing an equipment calibration programme in a conventional food microbiology laboratory for ISO/IEC 17025:2017 accreditation purpose	2
Risk analysis approach for PT participation	2
Ten years of an external quality program control in clinical microbiology: a statistical analysis of the results	2
Expression for uncertainty intervals handling skewness when the relative standard uncertainty is independent of the measurand level	2
Laboratory glassware cleaning validation in pharmaceutical industry: a case study	2
Error analysis of measurement uncertainty: a snapshot literature review in field of medicine and health in China	2
A proposal of model for a quality management system in research testing laboratories	1
The issue of reporting the measurement uncertainty in accredited tests	1
Determination of residual protein in commercial human milk oligosaccharides	1
Analytical quality by design (AQbD) in the ICHQ14 guidelines for analytical procedure development	1
Quality control charts for short or long runs without a training phase. Part 1. Performances in state of control and in the presence of outliers	1
Design and implementation of electronic reference material document system	1
Improved coverage factors for expanded measurement uncertainty calculated from two estimated variance components	1
A case study for in-house method validation of gas chromatography technique using class-1 calibration gas mixtures for greenhouse gases monitoring	1
External quality assessment (EQA) combined with on-site technical evaluation for capacity building in clinical microbiology laboratories in Pakistan	1
Proficiency testing to evaluate the effectiveness of laboratories analyzing active ingredient in formulation samples	1
Residue behavior and consumer risk assessment of combination product of betacyfluthrin and imidacloprid on cucumber (Cucumis sativus L.)	1
Proficiency testing interpretation based on analysis of variance method	1
A fit-for-purpose nongaseous impurity assay procedure for potential inorganic primary reference materials by inductively coupled plasma mass spectrometry	1
Correction to: Improving performance evaluation via the provision of proficiency testing programmes in Asia–Pacific with metrologically traceable reference values for inorganic elements	1
Optimization of medium composition for production of a simulated urine sample containing Enterococcus faecalis	1
Identifying risk management challenges in laboratories	1
Estimation of uncertainty from duplicate measurements: new quantification procedure in the case of concentration-dependent precision	1
Trends in the development of proficiency testing for chemical analysis: focus on food and environmental matrices	1
Assessing the performances of on-line analyzers can greatly improve free chlorine monitoring in drinking water	1
Measurement uncertainty from sampling and its role in validation of measurement procedures	1
Development and validation of simultaneous equation method for the estimation of andrographolide and apocynin in hepatoprotective polyherbal formulation using UV–visible spectrophotometry	1
Correction: Certification of the total element mass fractions in UME EnvCRM 03 soil sample via a joint research project	1
Approaches for the production of reference materials with qualitative properties—The new International Standard ISO 33406	1

Feasible stoichiometric reactions for SI traceable bromate assays	1
Sampling in the context of conformity assessment	1
RP-HPLC-DAD method development and validation of L-lysine hydrochloride: application to bulk drug substance and multivitamin oral suspension	1
Improvement of the quality of analytical results generated by GC/MS method for characterization of Helichrysum italicum (Roth) G. Don essential oil	0
Purity analysis of 4-bromodiphenyl ether for reference materials	0
Quality control charts for short or long runs without a training phase. Part 2. Performances in the presence of a persistent systematic error and simultaneous small shifts in the mean and the variance	0
Evaluation of the 1R6F certified reference cigarette for proficiency testing of mainstream smoke parameters	0
Statistical internal quality control (SIQC) in chemical measurement—do we really understand it?	0
Production and certification of a freeze-dried reference material for human urinary steroids to ensure quality of longitudinal profiling data	0
Selection of bacterial strains in a testing microbiology laboratory for quality assurance purposes: ISO/IEC 17025:2017 standard point of view	0
The units of rate constants in chemical kinetics	0
Validation and measurement uncertainty of rapid and simultaneous determination of 19 elements in drinking water using ICP-MS	0
Simultaneous equation method for the estimation of gallic acid and apigenin by UV–visible spectrophotometry	0
Development of benzene, toluene, ethyl benzene, m-xylene, p-xylene and o-xylene (BTEX) gas reference standards for air pollution monitoring in South Africa	0
Getting started with uncertainty evaluation using the Monte Carlo method in R	0
Reply to “Facing a shortage of the Latin letters for the prospective new SI symbols: alternative proposal for the new SI prefixes”	0
Carbon monoxide proficiency testing scheme with metrological traceability	0
Risk management approach for testing and calibration laboratories	0
Appropriate statistical techniques when using consensus statistics to evaluate performance	0
The optimization approach for uncertainty assessment of the heating value of aviation fuel	0
Certification and long-term stability of bromate ion standard solution	0
Complying with the resource requirements of ISO/IEC 17025:2017 in Indonesian calibration and testing laboratories: current challenges and future directions	0
Comparing uncertainties—Are they really different?	0
The mycotoxin proficiency testing schemes organized by Turkish National Food Reference Laboratory between the years 2013 and 2020	0
Comparisons of real versus synthetic proficiency testing items	0
Meaningful expression of uncertainty in measurement	0
Improved residue on ignition method for the mass fraction of inorganic impurities of pure organic substances	0
(K)ILO project: proficiency tests for students	0
A comparison of proficiency testing evaluation criteria approaches for fitness-for-purpose	0
Information combination and transformation: a paradox and its resolution	0
Metrological technical specification for purity assessment of organic pure substance certified reference materials in China	0
Improved performance of neutron activation analysis laboratories by feedback workshops following interlaboratory comparison rounds	0
Correction to: Special Issue in Memory of Paul de Bièvre (1933–2016)	0
Investigation of the effect of antioxidant-added skin care creams on UV-B-induced oxidation in skin simulation environment by spectroscopic and chromatographic analyses	0
Some pitfalls in the uncertainty evaluation of isotope delta reference materials	0
Insights on the validation of alternative tools for water quality monitoring: the case of on-site test kits, portable devices and continuous measuring devices	0
Application of stochastic Bayesian modeling to assess quality and safety profile of tea in China market	0
New statistical framework for interlaboratory evaluation of anti-doping testing results by WADA	0
Application of ISO 16140-3:2021 standard to verify compact dry BC method in a single food microbiology laboratory	0
Pesticide residues in fruits and vegetables in Indonesia: findings of five-year proficiency testing	0
Indonesian proficiency testing for electrolytic conductivity measurement of synthetic wastewater: a comparison of performance evaluation based on four standardized performance statistics	0
Target uncertainty: a critical review	0
Certification of a novel matrix reference material for accurate measurements of aflatoxin M1 in milk powder	0
System proposal for implementation of risk management in the context of ISO/IEC 17025	0
An empirical examination of ISO 9001’s influence on sustained success of companies	0
Quantitative 1H NMR methodology for purity assay with high accuracy	0
Establishment of Cryptococcus neoformans and C. gattii as certified reference materials according to the requirements of ISO 17034:2016	0
Measurement uncertainty of blood alcohol concentration (BAC) by headspace gas chromatography: comparison of different strategies	0
Investigation of cylinder pre-treatments for the stability of ammonia gas reference materials	0
Human health risk assessment of pesticide residues in pointed gourd collected from retail markets of Dhaka City, Bangladesh	0
AQbD enabled method development and quantification of asiaticoside in foam-based formulations	0
Implementing a new risk management culture in a forensic genetics laboratory: first steps	0
Toward ISO/IEC 17025 compliance: challenges and strategies for a university research laboratory	0
True value, error, and measurement uncertainty: two views	0
Boxplot fences in proficiency testing	0
Preparation of a reference material for tea containing five pesticide residues and its evaluation in an interlaboratory comparison study in China	0
Indonesian experience in providing accuracy-based proficiency testing scheme using metrologically traceable reference values for elements mass fraction in drinking water	0
The comparison of flow rate calibration methods for high-performance liquid chromatography (HPLC) pump	0
Reference measurement procedure for the determination of mass fraction of fat content in food	0
Systematic study on the variability in the gasoline sampling process at service stations and its contribution to the measurement variance	0
RP-HPLC-based simultaneous quantification and stability assessment of doxycycline hyclate and aloe-emodin in lipid nanocarriers	0
Internal audit techniques for testing laboratories: ISO/IEC 17025:2017 perspective	0
Validation and measurement uncertainty evaluation of a GC/MS method for the quantification of nine phthalates in tattoo and PMU inks	0
From VIM3 toward the next edition of the International Vocabulary of Metrology	0
Correction to: Evaluation of reproducibility uncertainty in micropipette calibrations for non‑nominal volumes through an interlaboratory study	0
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	0
The role of measurement uncertainty in the validation of a measurement procedure	0
Quantification of antibiotics in imported and local broiler chickens using MS/Q-TOF: a study from Muscat Governorate	0
Improvement of reference gas calorimeter to measure the gross calorific value of the reference methane gas having high purity (99.995 %) and calculation of uncertainty	0
Laboratory performances during proficiency tests for the analysis of active substances in pesticide formulations during 2021–2023	0
Unlocking the secret to reliable leather test results: the importance of proficiency testing in establishing metrological traceability	0
Bilateral comparison of primary reference materials (PRMs) containing methanol, ethanol and acetone in nitrogen	0
Impact of the COVID-19 pandemic on accredited conformity assessment bodies: insights from a multinational study	0
Evaluation of proficiency testing participants uncertainty: use relative uncertainty	0
On testing of the homogeneity of variances for two-side power distribution family	0
Key issues related to the accreditation of academic laboratories	0
Development of Certified Reference Materials of Trace Elements in Gold Solution (GBW02797–GBW02800)	0
The conception and initial years of a quality management system based on ISO/IEC 17025: an action research	0
Consistency plots: a simple graphical tool for investigating agreement in key comparisons	0
Improving performance evaluation via the provision of proficiency testing programmes in Asia–Pacific with metrologically traceable reference values for inorganic elements	0

Provision of chemical proficiency testing round on corn-based snack food for laboratories in the Asia-Pacific	0
Comparative analysis of the skin surface lipids between acne patients and controls using UFLC method	0
Value assignment and uncertainty evaluation for certified reference gas mixtures	0
Optimized RP-HPLC method development and validation for quantification of articaine in bulk and nanostructured lipid carriers using a quality-by-design framework	0
Application of secondary pH measurement method for homogeneity and stability assessment of reference materials	0
On the role of probability in science, analytical measurement and QUAM	0
Special Issue in Memory of Paul de Bièvre (1933–2016)	0
Is the z score sufficient to assess participants’ performance in proficiency testing? The hidden corrective action	0
Concept for evaluating results close to the participants’ limits of quantification in proficiency tests for elements in food	0
A new proficiency testing scheme for occupational hygiene laboratories undertaking the analysis of diesel engine particulate emissions	0
Comparison of continuous flow analysis and ion chromatography for determinations of nitrate, nitrite and phosphate ions in seawater and development of related seawater certified reference materials	0
Risk management: ten years of experience in the organization of the proficiency testing AQUA	0
Measurement uncertainty in testing of biologicals in national control laboratories for ISO/IEC 17025: practical approaches	0
Total cow’s milk protein in cookies: the first interlaboratory comparison with a well-defined measurand fit for food allergen risk assessment	0
Impurity analyses for a certified reference material of high-purity sulfur dioxide gas (NMIJ CRM 3402)	0
Need for a protocol for performance evaluation of the gas analyzers used in biomethane conformity assessment	0