標(biāo)準(zhǔn)號(hào)：ISO 4120-2004
中文標(biāo)準(zhǔn)名稱：感官分析.方法學(xué).三角試驗(yàn)
英文標(biāo)準(zhǔn)名稱：Sensory analysis - Methodology - Triangle test
標(biāo)準(zhǔn)類型：X04
發(fā)布日期：1999/12/31 12:00:00
實(shí)施日期：1999/12/31 12:00:00
中國(guó)標(biāo)準(zhǔn)分類號(hào)：X04
國(guó)際標(biāo)準(zhǔn)分類號(hào)：67.240
適用范圍：This International Standard describes a procedure for determining whether a perceptible sensory difference or similarity exists between samples of two products. The method is a forced-choice procedure. The method is applicable 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 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 for a) 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, handling or storage; b) or for selecting, training and monitoring assessors.