標準號：BS EN ISO 4120-2007
中文標準名稱：感官分析.方法學.三角試驗
英文標準名稱：Sensory analysis - Methodology - Triangle test
標準類型：X04
發布日期：2004/7/1 12:00:00
實施日期：2004/7/1 12:00:00
中國標準分類號：X04
國際標準分類號：67.240
引用標準：ISO 5492-1992;ISO 8589-1988
適用范圍：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.