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Indonesian experience in providing accuracy-based proficiency testing scheme using metrologically traceable reference values for elements mass fraction in drinking water
Proficiency testing (PT) scheme for the mass fraction of arsenic (As), cadmium (Cd), copper (Cu), nickel (Ni) and zinc (Zn) in bottled drinking water...
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Improving performance evaluation via the provision of proficiency testing programmes in Asia–Pacific with metrologically traceable reference values for inorganic elements
This paper reviews some proficiency testing (PT) programmes operated under the auspices of Asia Pacific Metrology Programme and Asia Pacific...
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Microbiological quality of ready-to-eat street foods in Lisbon, Portugal
Street food sector is an important component of the food distribution system in many cities. However, foods exposed for sale on the roadside are...
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S-score: a new score for binary qualitative proficiency testing schemes interpretable as the z-score
The S-score is a new performance score applicable to proficiency testing (PT) for binary data. It allows the proficiency test provider to choose how...
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Intercomparison exercise on difficult to measure alpha radionuclides in spent ion exchange resin
In radiochemical analysis of decommissioning waste, reference materials are not commercially available and consequently intercomparison exercises are...
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An accuracy-based proficiency testing programme with metrological reference values for the mass fraction of acesulfame potassium and sucralose in cake mix flour
This paper describes a metrological approach to evaluate the measurement capability of laboratories participating in a then Asia Pacific Laboratory...
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Boxplot fences in proficiency testing
The box and whiskers plot (boxplot) has shown to be an effective data visualization tool in proficiency testing. The boxplot provides a quick visual...
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The Application of SDS-PAGE Protein and HPTLC Amino Acid Profiling for Verification of Declared Variety and Geographical Origin of Honey
Proteins and amino acids are minor components of honey that are rarely used for its quality evaluation, although these components create its...
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Comment on “Thermodynamic Data for Sn(IV) Species in Aqueous Solution: Matter of Controversy and Error”
May and Filella (J Solution Chem 52:754–761, 2023) concluded that they had verified the data in Gamsjäger et al. (Chemical thermodynamics of tin...
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Improving the accuracy of the FMO binding affinity prediction of ligand-receptor complexes containing metals
Polarization and charge transfer strongly characterize the ligand-receptor interaction when metal atoms are present, as for the Au(I)-biscarbene/DNA...
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Monitoring the quality of fortified cold-pressed rapeseed oil in different storage conditions
The main aim of the study was to monitor the quality of fortified cold-pressed rapeseed oil stored in different conditions. The rapeseed oil was...
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Pesticide residues in fruits and vegetables in Indonesia: findings of five-year proficiency testing
The first proficiency testing of pesticides in fruits and vegetables in Indonesia is reported. This report covers the findings of five-year...
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Analytical Ultracentrifuge for the Characterization of Detergent in Solution
We have characterized the hydrodynamic behaviour in H 2 O and D2O of two detergents, dodecyl-β-D-maltoside...
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Proficiency tests for analysis of pesticide residues in kimchi cabbage and ginseng in South Korea from 2008 to 2020
From 2008 to 2020, the Ministry of Food and Drug Safety (MFDS) and the Korea Research Institute of Standards and Science (KRISS) jointly conducted a...
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Appropriate statistical techniques when using consensus statistics to evaluate performance
A large variety of statistical methods can be used for proficiency testing (PT) programs in various areas of laboratory testing. Statistical methods...
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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
This paper describes a collaborative effort by five metrology institutes to organise a proficiency testing (PT) programme which aims to evaluate the...
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An improved, less erroneous protocol for the classical “cuen”, “cuoxam” or “cadoxen” viscosity measurements of pulps
Correctness and reliability of molar mass data by viscometry in organometallic solvents (cuen, cuoxam, cadoxen) are compromised by the alkalinity of...
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Electrochemistry and band structure of semiconductors (TiO2, SnO2, ZnO): Avoiding pitfalls and textbook errors
This paper reviews selected problems, which appear in literature dealing with TiO 2 , SnO 2 , and ZnO. Some of them have more universal impact to...
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An alternative to the concept of variable activation energy
It is demonstrated here that the concept of variable activation energy is mathematically not fully correct. Further it is shown that general rate...
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Evaluation of Analytical Data
The study of food analysis involves a considerable amount of time learning principles, methods, and instrument operations and perfecting various...