ISO 3960:2017规定了用于视觉终点检测的动物和植物脂肪和油的碘量测定方法。过氧化值是作为过氧化物，特别是氢过氧化物，与油或脂肪化学结合的氧的量的量度。 该方法适用于所有动植物脂肪和油，脂肪酸及其混合物，其过氧化值为每千克活性氧为0meq至30meq（毫当量）活性氧。它也适用于不同含水量的人造黄油和脂肪酱。该方法不适用于牛奶脂肪，不适用于卵磷脂。 应注意，过氧化值是一个动态参数，其值取决于样品的历史。此外，过氧化值的测定是高度经验的程序，所获得的值取决于样品质量。要强调的是，由于规定的样品质量，所获得的过氧化值可以略低于样本质量较低的值。 牛奶和奶制品（或来自牛奶和奶制品的脂肪）不在本文档的范围之内。 注1:在ISO 3976中规定了用于测定牛奶中过氧化值的碘量测定法的优选方法。 注2 A

ISO 3960:2017 specifies a method for the iodometric determination of the peroxide value of animal and vegetable fats and oils with a visual endpoint detection. The peroxide value is a measure of the 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 milk fats and is not applicable 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. It is stressed that, due to the prescribed sample mass, the peroxide values obtained can be slightly lower than those obtained with a lower sample mass. Milk and milk products (or fat coming from milk and milk products) are excluded from the scope of this document. NOTE 1 A preferred method for the iodometric determination of the peroxide value for milk fats is specified in ISO 3976. NOTE 2 A method for the potentiometric determination of the peroxide value is given in ISO 27107.