BS EN ISO 4120-2007 感官分析.方法学.三角试验

标准号：BS EN ISO 4120-2007
中文标准名称：感官分析.方法学.三角试验
英文标准名称：Sensory analysis - Methodology - Triangle test
标准类型：X04
发布日期：2004/7/1 12:00:00
实施日期：2004/7/1 12:00:00
中国标准分类号：X04
国际标准分类号：67.240
引用标准：ISO 5492-1992;ISO 8589-1988
适用范围：This International Standard describes a procedure for determining whether a perceptible sensory difference orsimilarity exists between samples of two products. The method is a forced-choice procedure. The method isapplicable whether a difference exists in a single sensory attribute or in several attributes.The method is statistically more efficient than the duo-trio test (described in ISO 10399), but has limited usewith products that exhibit strong carryover and/or lingering flavours.The method is applicable even when the nature of the difference is unknown [i.e. it determines neither the sizenor the direction of difference between samples, nor is there any indication of the attribute(s) responsible forthe difference]. The method is applicable only if the products are fairly homogeneous.The method is effective fora) determining that either a perceptible difference results (triangle testing for difference), or a perceptible difference does not result (triangle testing for similarity) when, for example, a change ismade in ingredients, processing, packaging, handling or storage;b) or for selecting, training and monitoring assessors.