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WEFTA-Laborvergleichsuntersuchung zur pH-Bestimmung in Fischerei-Erzeugnissen: eine gemeinsame Aktion der Western European Fish Technologists' Association = WEFTA inter-laboratory comparison exercise on pH determination in fishery products: a co-operation of the Western European Fish Technologists' Association
Oehlenschläger, J.; Bossier, P.; Bykowski, P.; Etienne, M.; Huidobro, A.; Karl, H.; Luten, J.; Mendes, R.; Palmadottir, H.; Åkesson, G. (2002). WEFTA-Laborvergleichsuntersuchung zur pH-Bestimmung in Fischerei-Erzeugnissen: eine gemeinsame Aktion der Western European Fish Technologists' Association = WEFTA inter-laboratory comparison exercise on pH determination in fishery products: a co-operation of the Western European Fish Technologists' Association. Inf. Fischwirtsch. Fischereiforsch. 49(4): 161-167
In: Informationen für die Fischwirtschaft. Bundesforschungsanstalt für Fischerei: Hamburg. ISSN 0020-0344, meer
Peer reviewed article  
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  • Oehlenschläger, J.
  • Bossier, P., meer
  • Bykowski, P.
  • Etienne, M.
  • Huidobro, A.
  • Karl, H.
  • Luten, J., meer
  • Mendes, R.
  • Palmadottir, H.
  • Åkesson, G.
Abstract
    12 samples (6 original samples and 6 diluted samples) were analysed, by 14 WEFTA laboratories for their pH values in an inter-laboratory comparison exercise. As a result it can be stated that the majority of participating laboratories could determine the pH values very exactly. The pH values obtained are ranging only little around the calculated mean (less than 0.1 pH unit). It could also be demonstrated that the participating institutes could analyse both, pH values in fishery products and aqueous salt solutions. However, also in this exercise a number of outliers and deviating values have been detected. Therefore it is of utmost importance to calibrate the pH electrodes in regular intervals and to maintain them carefully. Intra-laboratory comparison measurements are recommended to detect weak points.
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