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Journal articles on the topic 'Interlaboratory comparison study'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Hendzel, Marilyn R., Bruce W. Fallis, and Brigitte G. E. Demarch. "Interlaboratory Comparison of Analyses for Heavy Metals in Clam Tissue." Journal of AOAC INTERNATIONAL 69, no. 5 (1986): 863–68. http://dx.doi.org/10.1093/jaoac/69.5.863.

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Abstract Results are reported for an interlaboratory study conducted to assess the reproducibility of analyses for lead, copper, cadmium, and zinc. The 10 participating laboratories analyzed 2 samples of freeze-dried clam tissue and 1 disguised sample of NBS Oyster Tissue. Interlaboratory variations were observed for all metals, although the methods yielded reproducible data for Cu and Zn with average interlaboratory coefficients of variation of 15 and 11%, respectively. The performance of methods used for Cd and, more so, for Pb was less than satisfactory. Cadmium levels in the 3 samples rang

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Martínez-Francés, Elena, Bavel Bert van, Rachel Hurley, et al. "Innovative reference materials for method validation in microplastic analysis including interlaboratory comparison exercises." Analytical and Bioanalytical Chemistry 415 (March 22, 2023): 2907–19. https://doi.org/10.1007/s00216-023-04636-4.

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Reference materials (RMs) are vital tools in the validation of methods used to detect environmental pollutants. Microplastics, a relatively new environmental pollutant, require a variety of complex approaches to address their presence in environmental samples. Both interlaboratory comparison (ILC) studies and RMs are essential to support the validation of methods used in microplastic analysis. Presented here are results of quality assurance and quality control (QA/QC) performed on two types of candidate microplastic RMs: dissolvable gelatin capsules and soda tablets. These RMs have been used t

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3

Chung, In-Young, Oh-Sung Kwon, Dalrae Jin, et al. "Interlaboratory Comparison Study on Polycyclic Aromatic Hydrocarbons in Sediment." Journal of Environmental Analysis, Health and Toxicology 22, no. 4 (2019): 312–18. http://dx.doi.org/10.36278/jeaht.22.4.312.

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4

Döcke, Wolf-Dietrich, Conny Höflich, Kenneth A. Davis, et al. "Monitoring Temporary Immunodepression by Flow Cytometric Measurement of Monocytic HLA-DR Expression: A Multicenter Standardized Study." Clinical Chemistry 51, no. 12 (2005): 2341–47. http://dx.doi.org/10.1373/clinchem.2005.052639.

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Abstract Background: Single-center trials have shown that monocytic HLA-DR is a good marker for monitoring the severity of temporary immunodepression after trauma, major surgery, or sepsis. A new test for measuring monocytic HLA-DR is now available. Methods: We evaluated a new test reagent set for monocytic HLA-DR expression (BD Quantibrite™ HLA-DR/Monocyte reagent; Becton Dickinson) in single-laboratory and interlaboratory experiments, assessing preanalytical handling, lyse-no-wash (LNW) vs lyse-wash (LW) values, reference values, and the effect of use of different flow cytometers and differe

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Baikhozhayeva, B. U., A. K. Zhumagali, and A. E. Moldakhmetova. "Comparison of ph measurement results in buffer solution." BULLETIN of L.N. Gumilyov Eurasian National University. Technical Science and Technology Series 135, no. 2 (2021): 64–70. http://dx.doi.org/10.32523/2616-7263-2021-135-2-64-70.

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As a result of the increasing need to study the choice of the assigned value during the inter-laboratory comparisons is becoming more and more relevant. Since the assigned value is a reference point when comparing the results of the participants of the qualification test. Frequently, qualification verification providers face a number of problems when choosing the assigned value. An incomplete analysis of the results of interlaboratory comparisons will lead to an inaccurate assessment of the competence of the laboratory, which contributes to the revocation of the certification of the accreditat

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Dominutti, Pamela A., Jean-Luc Jaffrezo, Anouk Marsal, et al. "An interlaboratory comparison to quantify oxidative potential measurement in aerosol particles: challenges and recommendations for harmonisation." Atmospheric Measurement Techniques 18, no. 1 (2025): 177–95. https://doi.org/10.5194/amt-18-177-2025.

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Abstract. This paper presents the findings from a collaborative interlaboratory comparison exercise designed to assess oxidative potential (OP) measurements conducted by 20 laboratories worldwide. This study represents an innovative effort as the first exercise specifically aimed at harmonising this type of OP assay, setting a new benchmark in the field. Over the last decade, there has been a noticeable increase in OP studies, with numerous research groups investigating the effects of exposure to air pollution particles through the evaluation of OP levels. However, the absence of standardised

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McGeehan, Steven, Timothy Baszler, Cynthia Gaskill, et al. "Interlaboratory comparison of heavy metal testing in animal diagnostic specimens and feed using inductively coupled plasma–mass spectrometry." Journal of Veterinary Diagnostic Investigation 32, no. 2 (2020): 291–300. http://dx.doi.org/10.1177/1040638720903115.

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We compared inductively coupled plasma–mass spectrometry (ICP-MS) test results for the analysis of heavy metals (As, Ba, Cd, Hg, Pb, and Se) in pet foods and routine veterinary diagnostic specimens using intralaboratory and interlaboratory comparisons. Four laboratories, 1 principal laboratory and 3 collaborating laboratories, conducted instrument comparison (limit of detection [LOD], limit of quantification [LOQ], and linear dynamic range [LDR] on 24 data sets), in-house method comparison (accuracy and precision on 120 data sets), and interlaboratory comparison (reproducibility on 528 data se

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Sluiter, Justin B., Helena Chum, Absai C. Gomes, et al. "Evaluation of Brazilian Sugarcane Bagasse Characterization: An Interlaboratory Comparison Study." Journal of AOAC INTERNATIONAL 99, no. 3 (2016): 579–85. http://dx.doi.org/10.5740/jaoacint.15-0063.

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Abstract This paper describes a study of the variability of measured composition for a single bulk sugarcane bagasse conducted across eight laboratories using similar analytical methods, with the purpose of determining the expected variation for compositional analysis performed by different laboratories. The results show good agreement of measured composition within a single laboratory, but greater variability when results are compared among laboratories. These interlaboratory variabilities do not seem to be associated with a specific method or technique or any single piece of instrumentation.

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de Jong, A. P., A. Dross, P. Fürst, G. Lindström, O. Päpke, and J. R. Startin. "Interlaboratory comparison study on PCDDs and PCDFs in cow's milk." Fresenius' Journal of Analytical Chemistry 345, no. 1 (1993): 72–77. http://dx.doi.org/10.1007/bf00323330.

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Blum, Carolin, Lothar Opilik, Joanna M. Atkin, et al. "Tip-enhanced Raman spectroscopy - an interlaboratory reproducibility and comparison study." Journal of Raman Spectroscopy 45, no. 1 (2014): 22–31. http://dx.doi.org/10.1002/jrs.4423.

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Ön Aktan, S., E. Bilgiç, I. Ahmet Yüksel, K. Berk Sönmez, T. Kutay Veziroglu, and T. Torun. "Interlaboratory comparison results of vibration transducers between TÜBITAK UME and Roketsan." ACTA IMEKO 9, no. 5 (2020): 401. http://dx.doi.org/10.21014/acta_imeko.v9i5.1009.

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This paper presents an interlaboratory comparison on vibration metrology field which can be used as a powerful method of checking the validity of results and measurement capabilities according to ISO 17025. In this standard it is advised to participate in an interlaboratory comparison or a proficiency test in order to prove measurement capabilities of calibration providers. In this study it is aimed to statistically evaluate the measurements results in the scope of sinusoidal acceleration between TÜBITAK UME (National Metrology Institute of Turkey) and Roketsan as per related International Sta

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Kovacs, Marius, Angelica-Nicoleta Găman, Lorand Toth, and Romeo Hrișcan. "Interlaboratory comparisons to demonstrate the competence of two similar mobile laboratories." MATEC Web of Conferences 373 (2022): 00018. http://dx.doi.org/10.1051/matecconf/202237300018.

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In order to maintain the RENAR (Romanian Accreditation Association) accreditation, each accredited laboratory must periodically participate in interlaboratory testing programs carried out with specialized providers or similar laboratories. In December 2021, an interlaboratory comparison in the field of environmental protection was organized by INCD ISEMEX PETROȘANI. The current paper examines the similarity of results of two auto-laboratories, in similar sampling points to demonstrate the competence of accredited laboratories. During the interlaboratory test session, immission measurements (ni

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Greaves, M., N. Caillon, H. Rebaubier, et al. "Interlaboratory comparison study of calibration standards for foraminiferal Mg/Ca thermometry." Geochemistry, Geophysics, Geosystems 9, no. 8 (2008): n/a. http://dx.doi.org/10.1029/2008gc001974.

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Yatkin, Sinan, Claudio A. Belis, Michel Gerboles, et al. "An interlaboratory comparison study on the measurement of elements in PM10." Atmospheric Environment 125 (January 2016): 61–68. http://dx.doi.org/10.1016/j.atmosenv.2015.10.084.

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Apfalter, S., R. Krska, T. Linsinger, A. Oberhauser, W. Kandler, and M. Grasserbauer. "Interlaboratory comparison study for the determination of halogenated hydrocarbons in water." Fresenius' Journal of Analytical Chemistry 364, no. 7 (1999): 660–65. http://dx.doi.org/10.1007/s002160051409.

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Nixon, Charles W. "Comparison of WG11 study variability to that of other interlaboratory studies." Journal of the Acoustical Society of America 94, no. 3 (1993): 1792. http://dx.doi.org/10.1121/1.407924.

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17

Scott, E. M., M. S. Baxter, T. C. Aitchison, D. D. Harkness, and G. T. Cook. "An Overview of Some Interlaboratory Studies." Radiocarbon 32, no. 3 (1990): 259–65. http://dx.doi.org/10.1017/s0033822200012856.

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Many interlaboratory studies have been made in the 14C community at irregular intervals over the past ten years. At times, the results from these studies have been contentious, mostly because of the lack of consistency in their findings. The importance of regular exercises has become particularly acute due to the large number of operating laboratories and the diversity of their methodologies. Hence, we briefly review the studies that have been made in the 1980s, focusing on those in which our laboratories participated. These include the 14C Interlaboratory Comparison in the UK (Otlet et al 198

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18

Vreman, H. J., J. Verter, W. Oh, et al. "Interlaboratory variability of bilirubin measurements." Clinical Chemistry 42, no. 6 (1996): 869–73. http://dx.doi.org/10.1093/clinchem/42.6.869.

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Abstract During an 8-month study, 14 laboratories used automated analytical systems to measure total bilirubin concentrations in lyophilized bovine specimens containing 38, 169, and 253 micromol/L bilirubin (2.2, 9.9, and 14.8 mg/dL, respectively). The measured mean +/- SD (n, range) were: 39 +/- 7 micromol/L (n = 90, 31-53) [2.3 +/- 0.4 mg/dL (1.8-3.1)]; 176 +/- 29 micromol/L (n = 89, 146-222) [10.3 +/- 1.7 mg/dL (8.5-13.0)]; and 260 +/- 43 micromol/L (n = 103, 208-316) [15.2 +/- 2.5 mg/dL (12.1-18.5)]. In comparison with target values, measurements were consistently lower at 4, higher at 6,

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Rice, Stephen B., Christopher Chan, Scott C. Brown, et al. "Particle size distributions by transmission electron microscopy: an interlaboratory comparison case study." Metrologia 50, no. 6 (2013): 663–78. http://dx.doi.org/10.1088/0026-1394/50/6/663.

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20

Hoek, Gerard, Hans Welinder, Eva Vaskovi, et al. "Interlaboratory comparison of PM10 and black smoke measurements in the PEACE study." Atmospheric Environment 31, no. 20 (1997): 3341–49. http://dx.doi.org/10.1016/s1352-2310(97)00150-7.

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21

Blanck, Heidi Michels, Christine M. Pfeiffer, Samuel P. Caudill, et al. "Serum Iron and Iron-binding Capacity: A Round-Robin Interlaboratory Comparison Study." Clinical Chemistry 49, no. 10 (2003): 1672–75. http://dx.doi.org/10.1373/49.10.1672.

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Ittermann, Till, Simone Johner, Harald Below, et al. "Interlaboratory variability of urinary iodine measurements." Clinical Chemistry and Laboratory Medicine (CCLM) 56, no. 3 (2018): 441–47. http://dx.doi.org/10.1515/cclm-2017-0580.

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AbstractBackground:The iodine status of populations is usually assessed by median urinary iodine concentrations (UIC) in population-based studies, but it is unclear to which extent UIC are comparable across different laboratories. The aim of our study was to investigate the variability of UIC measurements across three well-established German laboratories with long-term clinical-chemical expertise in iodine measurements and to compare these results to the gold standard inductively coupled plasma mass spectrometry (ICP-MS).Methods:UIC levels were measured from 303 urine samples derived from the

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Fang, Fang, Julie M. Collins-Emerson, Cord Heuer, et al. "Interlaboratory and between-specimen comparisons of diagnostic tests for leptospirosis in sheep and cattle." Journal of Veterinary Diagnostic Investigation 26, no. 6 (2014): 734–47. http://dx.doi.org/10.1177/1040638714548476.

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A study was performed to investigate interlaboratory test agreement between a research and a commercial veterinary diagnostic laboratory on blood and urine samples, and to investigate test agreement between blood, urine, and kidney samples (research laboratory) for leptospirosis diagnosis. Samples were sourced from 399 sheep and 146 beef cattle from a local abattoir. Interlaboratory agreement for real-time quantitative polymerase chain reaction (qPCR) results on urine samples was almost perfect (kappa = 0.90), despite the use of different amplification targets (DNA gyrase subunit B gene vs. 16

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Guillaume, Benjamin, Hanane Aroui Boukbida, Gerben Bakker, et al. "Reproducibility of the wet part of the soil water retention curve: a European interlaboratory comparison." SOIL 9, no. 1 (2023): 365–79. http://dx.doi.org/10.5194/soil-9-365-2023.

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Abstract. The soil water retention curve (SWRC) is a key soil property required for predicting basic hydrological processes. The SWRC is often obtained in the laboratory with non-harmonized methods. Moreover, procedures associated with each method are not standardized. This can induce a lack of reproducibility between laboratories using different methods and procedures or using the same methods with different procedures. The goal of this study was to estimate the inter- and intralaboratory variability of the measurement of the wet part (from 10 to 300 hPa) of the SWRC. An interlaboratory compa

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Castro, Maysa Costa, Natália Fiorini Silva, and Linda Viola Ehlin Caldas. "Interlaboratory comparison of two homemade pencil type ionization chambers." Brazilian Journal of Radiation Sciences 12, no. 1 (2024): e2329. http://dx.doi.org/10.15392/2319-0612.2024.2329.

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Computed tomography (CT) is a diagnostic exam responsible for the highest dose values received by the patients during the procedure. Over the years, this kind of equipment has been improved to ensure that the patients do not receive unnecessary doses. For this reason it is important to keep a quality control program for the CT equipment. To perform the dosimetry in CT beams, the instrument used is usually a pencil type ionization chamber with a sensitive volume length of 10 cm. However, this kind of detector is available with different sensitive volume lengths. The aim of this study was to com

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Rob, Theelen, and A.A.J.Rutten. "Interlaboratory comparison of microsomal ethoxyresorufin and pentoxyresorufin 0-dealkylation determinations: standardization of assay conditions." Archives of Toxicology 66 (January 1, 1992): 237–44. https://doi.org/10.5281/zenodo.8198519.

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Assay conditions and results of cytochrome P-450 dependent 7-ethoxyresorufin (ER) and 7-pentoxyresorufin (PR) 0-dealkylation (OD) by rat liver microsomes were compared by four laboratories in the Netherlands. Microsomal mixtures were prepared from control, 3-methylcholanthrene and phenobarbital pretreated animals, resulting in different levels of cytochrome P-450 isozymes. EROD and PROD activities were determined in each laboratory according to their own protocols. Considerable variability was found both between and within laboratories. Further studies demonstrated that protocol differences ar

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Mueller, PatrIcIa W., Mary LouIse MacNeil, S. Jay Smith, and Dayton T. Miller. "Interlaboratory comparison of the measurement of albumin in urine." Clinical Chemistry 37, no. 2 (1991): 191–95. http://dx.doi.org/10.1093/clinchem/37.2.191.

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Abstract Because of increased interest in the assay of albumin in urine and the sensitivity required to quantify concentrations associated with (a) increased risk of developing end-stage renal disease and cardiovascular disease among people with diabetes and (b) renal damage caused by exposure to nephrotoxic substances, we conducted a pilot study of the variation of these measurements within and among five laboratories that use various immunoassays. These assays included two different enzyme immunoassays, two different immunoturbidimetric assays, a fluorescent immunoassay, and a zone immunoele

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LaBrecque, J. J., and P. A. Rosales. "The Homogeneity of Fe, Sr and Zr in SL-3/Lake Sediment Standard Reference Material by Radioisotope Induced X-ray Emission." Advances in X-ray Analysis 32 (1988): 191–95. http://dx.doi.org/10.1154/s0376030800020462.

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Following an international interlaboratory comparison study of SL-3 Lake Sediment sample, the results showed a large range of values for the iron concentration (0.538 to 1.270% Fe) with an overall standard deviation of 18 percent from 38 accepted laboratory averages, see Figure 1 (1).

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Photi, Juntima, Kunchit Judprasong, Sueppong Gowachirapant, Premmin Srisakda, Jutharat Supanuwat, and Christophe Zeder. "Collaborative Study for Iodine Monitoring in Mandatory Direct-Iodized Sauce in Thailand." Foods 12, no. 18 (2023): 3513. http://dx.doi.org/10.3390/foods12183513.

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Direct iodization in fish sauce, soy sauce, and seasoning sauces plays a crucial role in optimizing the iodine intake of Thailand’s people. However, determining the iodine content to ensure that these sauces meet the standard of Thailand’s Food and Drug Administration (FDA) is challenging. In this study, all local laboratories equipped with inductively coupled plasma–mass spectrometry (ICP-MS) and with experience in iodine analysis by any analytical method were invited to participate in a hands-on training workshop and two rounds of interlaboratory comparison. The aim was to improve laboratory

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Turner, Andrew D., Adam M. Lewis, Wade A. Rourke, et al. "Interlaboratory Comparison of Two AOAC Liquid Chromatographic Fluorescence Detection Methods for Paralytic Shellfish Toxin Analysis through Characterization of an Oyster Reference Material." Journal of AOAC INTERNATIONAL 97, no. 2 (2014): 380–90. http://dx.doi.org/10.5740/jaoacint.sgeturner.

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Abstract An interlaboratory ring trial was designed and conducted by the Centre for Environment, Fisheries, and Aquaculture Science to investigate a range of issues affecting the analysis of a candidate Pacific oyster paralytic shellfish toxin reference material. A total of 21 laboratories participated in the study and supplied results using one or more of three instrumental methods, specifically precolumn oxidation (Pre-COX) LC with fluorescence detection (FLD; AOAC Official Method 2005.06), postcolumn oxidation (PCOX) LC-FLD (AOAC Official Method 2011.02), and hydrophilic interaction LC/MS/M

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Thorne, David, Jason Adamson, Edgar Trelles Sticken, et al. "An interlaboratory in vitro aerosol exposure system reference study." Toxicology Research and Application 5 (January 1, 2021): 239784732199275. http://dx.doi.org/10.1177/2397847321992752.

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Given the complexity of inhaled substances, the aerosol exposure environment has seen diversification and development of setups in conjunction with the evolving in vitro toxicology space. Each laboratory uses its in vitro exposure system differently (different protocols, adaptations, and biological analysis). Unfortunately, as systems diversify, so does the complexity of comparing multiple systems in a “standardized” manner. As yet, no one has compared simply whether these diverse systems can all generate a consistent aerosol stream, which is paramount prior to transit and exposure. This study

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Parsons, P. J., N. V. Stanton, E. W. Gunter, D. Huff, J. R. Meola, and A. A. Reilly. "An interlaboratory comparison of control materials for use with hematofluorometers." Clinical Chemistry 35, no. 10 (1989): 2059–65. http://dx.doi.org/10.1093/clinchem/35.10.2059.

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Abstract This interlaboratory study was conducted to examine four erythrocyte protoporphyrin control materials from Aviv Biomedical, Helena Laboratories, Kaulson Laboratories, and the New York State Department of Health for use with hematofluorometers. Our principal aims were to monitor the stability of these materials at three different storage temperatures (room, refrigerator, freezer) and, where appropriate, to validate the manufacturer's target values. Measurements for the study were generated in three reference laboratories that used a total of five hematofluorometers, three from Environm

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Mubarak, Faisal Ali, Gia Ngoc Phung, Uwe Arz, et al. "An Interlaboratory Comparison of On-Wafer S-Parameter Measurements up to 1.1 THz." IEEE Transactions on Terahertz Science and Technology 15, no. 3 (2025): 344–58. https://doi.org/10.5281/zenodo.15395762.

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This article reports on an interlaboratory measurement comparison involving on-wafer S-parameter measurements from 10 GHz to 1.1 THz. Seven laboratories are involved, and each participant has measured an individual reference substrate fabricated from a high-resistivity silicon wafer in the same batch. One- and two-port co-planar waveguide (CPW) structures are designed, simulated, and fabricated. The measurements from 10 GHz to 1.1 THz, extending across six frequency bands, are conducted using different equipment in terms of vendors and specifications (e.g., probe pitch size). Despite such diff

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Murari, Madhav K., Sebastian Kreutzer, Marine Frouin, et al. "Infrared Radiofluorescence (IR-RF) of K-Feldspar: An Interlaboratory Comparison." Geochronometria 48, no. 1 (2021): 105–20. http://dx.doi.org/10.2478/geochr-2021-0007.

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Abstract Infrared Radiofluorescence (IR-RF) is a relatively new method for dosimetric dating of the depositional timing of sediments. This contribution presents an interlaboratory comparison of IR-RF measurements of sedimentary feldspar from eight laboratories. A comparison of the variability of instrumental background, bleaching, saturation, and initial rise behaviour of the IR-RF signal was carried out. Two endmember samples, a naturally bleached modern dune sand sample with a zero dose and a naturally saturated sample from a Triassic sandstone (~250 Ma), were used for this interlaboratory c

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Vesper, Hubert W., Shalender Bhasin, Christina Wang, et al. "Interlaboratory comparison study of serum total testoserone measurements performed by mass spectrometry methods." Steroids 74, no. 6 (2009): 498–503. http://dx.doi.org/10.1016/j.steroids.2009.01.004.

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Schuhmacher, Rainer, Manuela F�hrer, Wolfgang Kandler, Caroline Stadlmann, and Rudolf Krska. "Interlaboratory comparison study for the determination of methyl tert -butyl ether in water." Analytical and Bioanalytical Chemistry 377, no. 7-8 (2003): 1140–47. http://dx.doi.org/10.1007/s00216-003-2215-4.

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Schantz, Michele M., Barbara J. Porter, Stephen A. Wise, et al. "Interlaboratory comparison study for PCB congeners and chlorinated pesticides in beluga whale blubber." Chemosphere 33, no. 7 (1996): 1369–90. http://dx.doi.org/10.1016/0045-6535(96)00272-x.

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Downes, Katharine A., and Ira A. Shulman. "Pretransfusion Testing Practices in North America, 2005–2010: An Analysis of the College of American Pathologists Interlaboratory Comparison Program J-Survey Data, 2005–2010." Archives of Pathology & Laboratory Medicine 136, no. 3 (2012): 294–300. http://dx.doi.org/10.5858/2011-0127-cpr.1.

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Context.—Data collection and analysis of the College of American Pathologists (CAP) Interlaboratory Comparison Program (Proficiency Testing) J-Survey results provide insights into North American pretransfusion compatibility testing practices and trends. Objectives.—To assess current North American manual testing practices for ABO grouping, rhesus (Rh) typing, antibody screening, and crossmatching using CAP proficiency testing data. Design.—Analysis of the CAP Interlaboratory Comparison Program J-Survey data (2005–2010) to identify laboratory methods used for ABO grouping, Rh typing, antibody s

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Lombard, Bertrand, Marie Cornu, Cecile Lahellec, and Max H. Feinberg. "Experimental Evaluation of Different Precision Criteria Applicable to Microbiological Counting Methods." Journal of AOAC INTERNATIONAL 88, no. 3 (2005): 830–41. http://dx.doi.org/10.1093/jaoac/88.3.830.

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Abstract The dispersion of microbiological counting measurements, when repeating the analysis on the same material both within a laboratory (repeatability) and between laboratories (reproducibility) can be characterized by the organization of interlaboratory studies, where several sets of identical test materials are sent to several laboratories. Using the example of data generated by an interlaboratory study on enumeration of Listeria monocytogenes in foods by the standardized reference method (colony-count technique), 2 types of robust estimators of reproducibility standard deviations, based

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Xu, Jian Mei, Ying Zhou, Suo Zhuai Dong, et al. "Study on the Interlaboratory Comparison Test of the Electronic Test Method for Raw Silk." Applied Mechanics and Materials 241-244 (December 2012): 317–21. http://dx.doi.org/10.4028/www.scientific.net/amm.241-244.317.

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To establish an international standard on the electronic testing method for raw silk, the interlaboratory comparison tests of the electronic testing method for raw silk are done. Five lots of soaked silk are sampled and tested by four machines of the same type in four labs, 13 items including the defects and evenness information of each lot of silk are measured. The analysis of variance and multiple comparison procedure are used to find whether there exist significant differences among the four machines; and the result shows that there are no significant differences among the machines in testi

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Pustovyi, Andrii, Kostiantyn Ozerskyi, and Volodymyr Skliarov. "Study of uncertainty budget components in X-ray and gamma radiation dosimetry." Ukrainian Metrological Journal, no. 1 (March 28, 2025): 41–46. https://doi.org/10.24027/2306-7039.1.2025.325900.

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Dosimetry of X-ray and gamma radiation is widely used in medicine. The accuracy of measurements and their reproducibility directly affect the efficiency and safety of using radiation in radiotherapy and clinical diagnostics. Problems caused by the instability of radiation sources, environmental parameters, and the complexity of calibrating dosimetry chambers remain unresolved. In view of a growing need to standardize dosimetry measurements of X-ray and gamma radiation, international and national laboratories are conducting interlaboratory comparisons. This process allows for the evaluation of

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Jaworski, J. P., A. Pluta, M. Rola-Łuszczak, et al. "Interlaboratory Comparison of Six Real-Time PCR Assays for Detection of Bovine Leukemia Virus Proviral DNA." Journal of Clinical Microbiology 56, no. 7 (2018): e00304-18. http://dx.doi.org/10.1128/jcm.00304-18.

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ABSTRACTQuantitative real-time PCR (qPCR) is increasingly being used for the detection of bovine leukemia virus (BLV) proviral DNA. Nevertheless, quality control for the validation and standardization of such tests is currently lacking. Therefore, the present study was initiated by three Office International des Epizooties (OIE) reference laboratories and three collaborating laboratories to measure the interlaboratory variability of six already developed and available BLV qPCR assays. For that purpose, an international panel of 58 DNA samples reflecting the dynamic range of the majority of the

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Zaalberg, J. "Experimental Designs for Interlaboratory Precision Experiments: Comparison of ISO 5725 with Draft NEN 6303." Journal of AOAC INTERNATIONAL 72, no. 1 (1989): 34–37. http://dx.doi.org/10.1093/jaoac/72.1.34.

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Abstract To determine the precision of standardized analytical methods, interlaboratory experiments are carried out in which several laboratories analyze identical samples from well homogenized batches of material. From the test results, estimates of the standard deviations under repeatability as well as under reproducibility conditions are calculated. In the present work, the experimental designs recommended in the International Standard ISO 5725 have been compared with a design proposed in the draft Netherlands Standard NEN 6303. This has been done by comparing their mathematical models as w

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Mínguez-Martínez, Alberto, Piera Maresca, Jesús Caja, and Jesús de Vicente y. Oliva. "Results of a Surface Roughness Comparison between Stylus Instruments and Confocal Microscopes." Materials 15, no. 16 (2022): 5495. http://dx.doi.org/10.3390/ma15165495.

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This article presents the results of an LMM-R-2019 interlaboratory comparison. Such comparisons of different families of measuring instruments are one of the activities conducted among the calibration laboratories to maintain their ISO 17025 accreditation. Given that the study of surface roughness is becoming increasingly important in the field of dimensional metrology, the comparison focused on determining the Ra parameter on a pseudorandom metallic roughness standard using two types of measuring instruments: physical contact (stylus instruments) and optical (confocal microscopes). Among the

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Turner, S., S. S. Doorn, J. M. Phelps, E. S. Windsor, E. B. Steel, and M. E. Beard. "Large-Scale Interlaboratory Study of the Accuracy of Asbestos Analysis by TEM." Proceedings, annual meeting, Electron Microscopy Society of America 49 (August 1991): 974–75. http://dx.doi.org/10.1017/s0424820100089184.

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The National Institute of Standards and Technology (NIST) has been mandated by Congress to accredit and to test the proficiency of laboratories involved in the analysis of asbestos on filters by TEM. The laboratories are specifically accredited as proficient in the determination of the concentration of asbestos in air following abatement (or removal) of asbestos from school buildings using analytical procedures developed by the Environmental Protection Agency (EPA). Related to the accreditation program, NIST has conducted two interlaboratory studies of the accuracy of analysis by TEM. The firs

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Higuchi, T. "Estimation of uncertainty in olfactometry." Water Science and Technology 59, no. 7 (2009): 1409–13. http://dx.doi.org/10.2166/wst.2009.108.

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Estimation of uncertainty in odour measurement is essential to the interpretation of the measurement results. The fundamental procedure for the estimation of measurement uncertainty comprises the specification of the measurement process, expression of the measurement model and all influences, evaluation of the standard uncertainty of each component, calculation of the combined standard uncertainty, determination of a coverage factor, calculation of the expanded uncertainty and reporting. Collaborative study such as interlaboratory comparison of olfactometry yields performance indicators of the

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FURUTA, Naoki. "Interlaboratory Comparison Study on Lead Isotope Ratios Determined by Inductively Coupled Plasma Mass Spectrometry." Analytical Sciences 7, no. 5 (1991): 823–26. http://dx.doi.org/10.2116/analsci.7.823.

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Fullerton, A., A. Lahti, K. P. Wilhelm, D. Perrenoud, and J. Serup. "Interlaboratory comparison and validity study of the Minolta ChromaMeters CR-200 and CR-300." Skin Research and Technology 2, no. 3 (1996): 126–35. http://dx.doi.org/10.1111/j.1600-0846.1996.tb00074.x.

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Tinwell, H., U. Liegibel, O. Krebs, P. Schmezer, J. Favor, and J. Ashby. "Comparison of lacI and lacZ transgenic mouse mutation assays: an EU-sponsored interlaboratory study." Mutation Research/Environmental Mutagenesis and Related Subjects 335, no. 2 (1995): 185–90. http://dx.doi.org/10.1016/0165-1161(95)90054-3.

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Frank, Claudia, Christine Brauckmann, Marie Palos, et al. "Comparison of potential higher order reference methods for total haemoglobin quantification—an interlaboratory study." Analytical and Bioanalytical Chemistry 409, no. 9 (2017): 2341–51. http://dx.doi.org/10.1007/s00216-016-0176-7.

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