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Acta Alimentaria
Authors: E. Schall, Zs. Bugyi, L. Hajas, K. Török, and S. Tömösközi

. , Török , K. , Hajas , L. , Adonyi , Z. , Popping , B. & Tömösközi , S. ( 2013 ): Comparative study of commercially available gluten ELISA kits using an incurred reference material . Qual. Assur. Saf. Crop. , 5 , 79 – 87

Open access

Instrumentation and calibration of the Calvet calorimeter

Enthalpy of solution of PrBr3 at standard conditions

Journal of Thermal Analysis and Calorimetry
Authors: Beata Salamon, Jan Kapała, and Marcelle Gaune-Escard

calorimetric cells are equipped by the special mechanism for crushing glass ampoule with the sample. A small furnace for heating the reference material is placed over the cell. In order to obtain good stability of the apparatus with respect to time and

Open access
Acta Chromatographica
Authors: Young Sang Kwon, Sung-Gil Choi, Seung-Min Lee, Jong-Hwan Kim, and Jong-Su Seo

PCDD/Fs (EPA 1613 CS1 to CS5, LCS, and ISS) were certified purchases from Wellington Laboratories Inc. (Guelph, Ontario, Canada) and were used for the development of the analytical methodology. Certified reference material (CRM) samples including BCR

Open access
Interventional Medicine and Applied Science
Authors: Krisztina Nagy, Orsolya Láng, Júlia Láng, Katalin Perczel-Kovách, Szabolcs Gyulai-Gaál, Kristóf Kádár, László Kőhidai, and Gábor Varga

reference material for the reliable comparison of different scaffolds. At present, no scaffold materials are commercially available for tissue regeneration applications of PDLSCs [ 10 ]. HydroMatrix (HydM; Sigma-Aldrich, St. Louis, MO, USA) is a

Open access

Abstract  

The laboratory for instrumental neutron activation analysis at the Reactor Institute Delft, Delft University of Technology uses a network of 3 gamma-ray spectrometers with well-type detectors and 2 gamma-ray spectrometers with coaxial detectors, all equipped with modern sample changers, as well as 2 spectrometers with coaxial detectors at the two fast rabbit systems. A wide variety of samples is processed through the system, all at specific optimized (and thus different) analytical protocols, and using different combination of the spectrometer systems. The gamma-ray spectra are analyzed by several qualified operators. The laboratory therefore needs to anticipate on the occurrence of random and systematic inconsistencies in the results (such as bias, non-linearity or wrong assignments due to spectral interferences) resulting from differences in operator performance, selection of analytical protocol and experimental conditions. This has been accomplished by taking advantage of the systematic processing of internal quality control samples such as certified reference materials and blanks in each test run. The data from these internal quality control analyses have been stored in a databank since 1991, and are now used to assess the various method performance indicators as indicators for the method’s robustness.

Open access
Acta Alimentaria
Authors: L. Hajas, K. A. Scherf, Zs. Bugyi, K. Török, E. Schall, P. Köhler, and S. Tömösközi

, Z. , Diaz-Amigo , C. , Popping , B. , Poms , R. , Kerbach , S. & Tömösközi , S. ( 2012 ): Development of incurred reference material for improving conditions of gluten quantification . J. AOAC Int., 95 , 382 – 387

Open access

Finke, A., Kobold, U., Hoelzel, W. és mtsai: Preparation of a candidate primary reference material for the international standardisation of HbA 1c determinations. Clin. Chem. Lab. Med., 1998, 36

Open access

from AccuStandard, Inc. (New Haven, CT, USA). Sulfuric acid (H 2 SO 4 ), n -hexane, ethanol, decane, and silica gel (Wako-gel S1) were purchased from Wako Pure Chemical Industries (Tokyo, Japan). The standard reference material (SRM 1957) was purchased

Open access

temperature and energy with reference materials. Temperature and power scales were calibrated [ 36 – 38 ] at heating rates of 0.04 and 0.17 K s −1 . The temperature scale was calibrated by the melting temperature of the high-purity reference materials

Open access
Acta Chromatographica
Authors: D. Trbović, T. Polak, L. Demšar, N. Parunović, M. Dimitrijević, D. Nikolić, and V. Đorđević

their reproducibility limits and make recommendation for their use in laboratory practice [ 41 , 42 ], to evaluate and possibly improve analytical methods or laboratory performance, or to certify reference materials [ 43 – 45 ]. Due to the heterogeneity

Open access