David J. Alcarde Jr., Elyson Keith P. Encarnacion, Anne C. Alcantara, Harold E. Armario, Winnie P. Alejandro, Agaseve F. Del Rosario, Rizel Marie S.M. Ting, Ellaine R. Dioso
An awareness of chemical migration kinetics from the packaging to food is critical to determine consumer exposure and measure regulatory compliance. This paper analyzes the migration kinetics of the chemical residues of monolayer low density polyethylene (LDPE) package films under US 21 CFR and JETRO 2009 guidelines. LDPE film specimens were extracted with n-heptane at 21 °C for 30 minutes (US CFR) and 25 °C for 60 minutes (JETRO 2009). Migration data were modeled with zero-, first-, and second-order kinetic models. The results indicated poor correlation (R² < 0.1) for all the models, with...
IMEKO TC8, TC11 and TC24 Conference
· TC24
· 2025
· 10.21014/tc24-2025.037
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Mahbuba Moni, Daniel Peters, Florian Thiel, Axel Sikora
The European Union's Artificial Intelligence Act represents a significant regulatory framework that governs the deployment of AI systems across various sectors, including critical infrastructure. A crucial challenge identified is the integration of AI in measuring instruments, especially utility meters used in critical infrastructures, as highlighted in the EU AI Act's Annex III. In legal metrology, AI applications, especially language models, are primarily server-based, requiring substantial resources and continuous connectivity. The integration of AI and specifically of language models...
IMEKO TC8, TC11 and TC24 Conference
· TC11
· 2025
· 10.21014/tc11-2025.036
· Download
Nathalie Guigues, Sandrine Raveau, Jérémie Majar, Gaëlle Canteau, Béatrice Lalere
The performances of commercially available on-line analysers for monitoring free chlorine in water was carried out following protocols described in EN 17075 standard. Measurement uncertainty was estimated under controlled conditions considering bias, repeatability, and deviation from linearity as well as key influential factors for amperometric chlorine measurement: pH and temperature. The performance under real conditions was estimated as the percentile 90 of the differences between the free chlorine concentration measured by the on-line analyser, and the reference value obtained using the...
IMEKO TC8, TC11 and TC24 Conference
· TC24
· 2025
· 10.21014/tc24-2025.035
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Oleh Velychko, Iurii Kuzmenko, Sergii Kursin, Tetyana Gordiyenko
The measurement result by a standard may become unreliable without regular calibration, which may disrupt the chain of metrological traceability. Different chains of metrological traceability led to different measurement uncertainties. The readings of any standard change between calibrations due to its drift. The standard drift affects metrological traceability at all levels of its hierarchy. Taking into account the drift of the standard in practice may include the following elements: determining the appropriate component of the total measurement uncertainty; establishing the frequency of...
IMEKO TC8, TC11 and TC24 Conference
· TC8
· 2025
· 10.21014/tc8-2025.034
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Peter Rostron
Approaches to the validation of measurement procedures that include sampling have recently been published. They form a joint Eurachem / EUROLAB supplement to previous publications that focussed on validation of the analytical procedure only. These approaches require the use of a target measurement uncertainty that can be compared with the measurement uncertainty obtained by experiment. In situations where this target uncertainty is not known or specified in advance, the Optimised Uncertainty approach can provide a systematic method for calculating this value. A new program called OptiMU has...
IMEKO TC8, TC11 and TC24 Conference
· TC24
· 2025
· 10.21014/tc24-2025.033
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Saowaluck Ukrisdawithid; Thanundorn Pithakkiet
This paper explores uncertainty quantification in electrometric pH measurements using a Microsoft® Excel spreadsheet. The aim of this study is to simplify the process for analysts by providing a computational tool that calculates uncertainty based on pH calibration and measurement models. The provided layout allows immediate uncertainty calculation using the GUM, Kragten and Monte Carlo approaches. The GUM approach via partial derivatives confirms with relative uncertainty, while the Kragten approach evaluates the change in the result compared to the standard uncertainty, which reduces the...
IMEKO TC8, TC11 and TC24 Conference
· TC11
· 2025
· 10.21014/tc11-2025.032
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Admer Rey Dablio, Annabelle Briones, Rosemarie Salazar
In 2014, the Philippines’ Department of Science and Technology (DOST) has established the one-stop laboratory system for global competitiveness. Knowing the Philippines as an archipelagic country, with cities and communities separated by bodies of water, and with the fact that not one laboratory can cater into the wide variety of test and calibration requirements of various stakeholders, the Department decided to establish a network of testing and calibration laboratories, providing a linkage between stakeholders and the laboratories with capabilities. These laboratories are accredited by...
IMEKO TC8, TC11 and TC24 Conference
· TC11
· 2025
· 10.21014/tc11-2025.031
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Michael Ramsey
The validation of measurement procedures has traditionally focused on the analytical procedures applied to extracted samples within the laboratory (i.e. ex situ). However, it has been widely accepted that the measurement procedure actually begins at the moment that a sample is taken from the sampling target. The validation process therefore needs to be expanded to include the primary sampling procedure, and how to do this is explained in the new Eurachem Guide on Validation of Measurement Procedures that Include Sampling (VaMPIS). It is applicable to measurement procedures whether they are...
IMEKO TC8, TC11 and TC24 Conference
· TC24
· 2025
· 10.21014/tc24-2025.030
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Ilya Kuselman, Tamar Gadrich, Francesca R. Pennecchi, D. Brynn Hibbert, Anastasia A. Semenova, Angelique Botha
When a reference value for the measurand in an interlaboratory study is unknown, the laboratory results may be used to estimate/build a consensus value instead of a reference value. Since no algebraic operations and mathematical functions exist among categorical (nominal and ordinal) values, a numerical consensus value cannot be formulated. Consensus of responses of experts of different laboratories participating in an interlaboratory comparison, classifying a substance, material, or object according to its nominal and ordinal characteristics, could be interpreted as the degree to which the...
IMEKO TC8, TC11 and TC24 Conference
· TC8
· 2025
· 10.21014/tc8-2025.029
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Adam Gąska, Maciej Gruza, Piotr Gąska, Wiktor Harmatys
RealityScan is a free, powerful, photogrammetry-based mobile application that allows users to create high-quality 3D models from real-world objects using just a smartphone or tablet. By capturing multiple photos from different angles, the application processes the images into detailed 3D models that can be used in game development, virtual reality, and other creative projects. RealityScan simplifies the process of photogrammetry, making it accessible to professionals and hobbyists alike. In this paper, traceability assurance method for measurements performed using photogrammetric system...
IMEKO TC8, TC11 and TC24 Conference
· TC8
· 2025
· 10.21014/tc8-2025.028
· Download