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The certification of the cold filter plugging point (CFPP) and the cloud point (CP) in biodiesel from rapeseed
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The certification of the cold filter plugging point (CFPP) and the cloud point (CP) in biodiesel from rapeseed

ERM-EF002

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This report describes the production of ERM-EF002, which is a 100 % rapeseed oil based fatty acid methyl ester (biodiesel) material certified for cold filter plugging point (CFPP) and cloud point (CP). The material was produced following ISO Guide 34:2009 and is certified in accordance with ISO Guide 35:2006. A mixture of fatty acid methyl esters (FAME) derived from rapeseed oil with the addition of 1 g/kg of butylhydroxytoluene (BHT) as an antioxidant was purchased. The material was mixed ampouled in amber glass ampoules. Between-unit homogeneity was quantified, and stability during dispatch and storage were assessed following ISO Guide 35:2006 [ ]. Within-unit homogeneity was not quantified as the minimum sample intake is defined by the methods used and comprises almost the whole volume of the two ampoules of every unit. The material was characterised by an inter-comparison among laboratories of demonstrated competence and adhering to ISO/IEC 17025. Technically invalid results were removed, but no outlier was eliminated on statistical grounds. Uncertainties of the certified values were calculated in compliance with the Guide to the Expression of Uncertainty in Measurement (GUM), including uncertainties related to possible inhomogeneity, instability and characterisation. The material is intended for the quality control and assessment of method performance. As any reference material, it can also be used for control charts or validation studies. The certified reference material (CRM) is available in sets of two glass ampoules containing each 27 mL of biodiesel closed under argon atmosphere. The contents of the two ampoules shall be pooled to obtain one sample of 50 mL. The CRM was accepted as European Reference Material (ERM®) after peer evaluation by the partners of the European Reference Materials consortium.
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ISSN 1831-9424
ISBN 978-92-79-53882-7
DOI 10.2787/434305
Número de catálogo LA-NA-27577-EN-N
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ISSN 1831-9424 ISBN 978-92-79-53882-7 DOI 10.2787/434305 Número de catálogo LA-NA-27577-EN-N
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