AOCS OFFICIAL METHOD CD 3D-63 PDF

Meztilmaran The potentiometric method herein proposed was performed point-by-point and also using an automatic titrator in order to obtain the acid number of the solvents. Oils and fats are compounds that are constituted of esters formed by fatty organic acids linked to a molecule oficial glycerol, forming triacylglycerols. It should be noted that this method was originally proposed for the determination of the acid number of mineral oils and of biodiesel. Because of the above observations, it is evident that the precision of the proposed green potentiometric method is higher than of the all others here used for comparison.

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Offered in several different formats, the Official Methods and Recommended Practices of the AOCS is essential for a lab testing edible fats and oils and similar compounds.

Home Attain Lab Services Methods Known throughout the world as the most comprehensive collection of analytical testing methods for fats and oils, the Official Methods and Recommended Practices of the AOCS contains more than methods. The book comes as an expandable binder that opens flat for easy access to all methods. The binder style allows pages to be added so you can easily stay up-to-date with revisions and additions in one location.

Pages are acid-free to ensure permanence and durability. Searches can be performed by method number, keyword, analyte, industry, method title, or compound. Individual methods purchased online are delivered as a downloadable pdf. A site license allows your staff access to all of our methods electronically and ensures access to the latest updates and modifications. Already have a site license? Access here.

Access Methods Method Development To promote quality and consistency among the scientific community, AOCS provides detailed instructions on how to develop and write a method. We also provide guidelines for calculating precision and running collaborative studies.

Contribute International Standards Collaborations The International Organization for Standardization ISO is an independent, non-governmental international organization with a membership of national standards bodies. Through its members, ISO brings together experts to share knowledge and develop voluntary, consensus-based, market-relevant International Standards.

AOCS administers the U. TAGs to the technical and subcommittees.

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Zolomi This situation not only reduces the time of the analysis, but also minimizes the possible effect of dehydration of the electrode as it remains for a shorter period in contact with the 1: For the comparison of the precisions of the methods, the F -test was applied. This fact can be attributed to the tendency of the AOCS method to produce higher results because of the difficulty in the accurate determination of the end dc of the visual titration of a colored sample. Aoxs the reagents and solvents were of analytical grade. Nova32The other methods present similar standard deviation among them with a little lower value for RSD for green visual procedure.

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AOCS OFFICIAL METHOD CD 3D-63 PDF

Maugami Rapid preventive rehydration 1 min is enough to maintain the membrane of the electrode in good conditions. The shorter time of the automatic procedure means, as an evident consequence, that the glass membrane remains in contact with the solution for a shorter time interval in comparison with the point-by-point titration. Observing the results in Table 1 oficial, it is easy to note that those of the official AOCS method present a tendency to be a little higher than those of the proposed method and also of the others. London, UK,p. Therefore, the determination of their ovficial throughout the refining process and during the storage is important for monitoring the occurrence of degradation reactions. All the reagents and solvents were of analytical grade. The usual method for its determination is the AOCS Cd 3d AOCS, procedure, in which the sample is dissolved in toluene and isopropyl alcohol and a 3d titration is performed with a 0.

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