ISO 3960:2017 PDF

Scope: This document specifies a method for the iodometric determination of the peroxide value of animal and vegetable fats and oils with a visual endpointdetection. The peroxide value is a measure ofthe amount of oxygen chemically bound to an oil or fat as peroxides, particularly hydroperoxides. The method is applicable to all animal and vegetable fats and oils, fatty acids and their mixtures with peroxide values from 0 meq to 30 meq (milliequivalents) of active oxygen per kilogram. It is also applicable to margarines and fat spreads with varying water content. The method is not suitable for milkfats and is notapplicable to lecithins. It is to be noted that the peroxide value is a dynamic parameter, whose value is dependent upon the history of the sample. Furthermore, the determination of the peroxide value is a highly empirical procedure and the value obtained depends on the sample mass. Itis stressed that, due to the prescribed sample mass, the peroxide values obtained can be slightly lower than those obtained with a lower sample mass. Milkand milkproducts (orfatcomingfrom milkand milkproducts) are excluded from the scope ofthis document. NOTE 1 A preferred method for the iodometric determination of the peroxide value for milk fats is specified in NOTE 2 Amethod forthe potentiometric determination ofthe peroxide value is given in ISO 27107.

ISO 3960:2017 Referenced Document

ISO 27107:2008 Animal and vegetable fats and oils - Determination of peroxide value - Potentiometric end-point determination
ISO 3976:2006 Milk fat - Determination of peroxide value
ISO 5555:2001 Animal and vegetable fats and oils - Sampling
ISO 5725-1:1994 Accuracy (trueness and precision) of measurement methods and results - Part 1: General principles and definitions
ISO 5725-2:1994 Accuracy (trueness and precision) of measurement methods and results - Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
ISO 661:2003 Animal and vegetable fats and oils - Preparation of test sample

2017 ISO 3960:2017 Animal and vegetable fats and oils - Determination of peroxide value - Iodometric (visual) endpoint determination
2007 ISO 3960:2007 Animal and vegetable fats and oils - Determination of peroxide value - Iodometric (visual) endpoint determination
2002 ISO 3960:2001/Cor 1:2002 Animal and vegetable fats and oils — Determination of peroxide value — Technical Corrigendum 1
2001 ISO 3960:2001 Animal and vegetable fats and oils - Determination of peroxide value
1998 ISO 3960:1998 Animal and vegetable fats and oils - Determination of peroxide value
1977 ISO 3960:1977 Animal and vegetable oils and fats; Determination of peroxide value