標準號：DIN 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 (ISO 4120:2004) English version of DIN EN ISO 4120:2007-10
標準類型：X04
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 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 describes a procedure for detemining whether a perceptible sensory difference or similarity between samples of two products. The method is a forced-choice procedure . The method is applicable whether a difference exists in a single sensory attribure or in several attributes.The method is statistically more efficient than the duo-trio (described in ISO 10399),but has limited use with 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 size nor the direction of difference between samples,nor is there any indication of the attribute(s)responsible for the 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 is made in ingredients,processing,packaging,handing or storage;b) or for selecting,training and monitoring assessors.