GB/T 12311-2012 (English Version) PDF

Standard No.: GB/T 12311-2012
Language: Chinese, Available in English version
Release Date: 2012
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 12311-2012
Replace: GB/T 12311-1990

Scope: This International Standard specifies a method for determining whether there is a perceivable sensory difference or similarity between samples of two products. The standard method is a forced choice procedure. This standard applies to the determination of whether there is a difference in one or more sensory indicators. This standard is applicable when the characteristics of the difference are not determined (that is, the difference is neither determined by the magnitude and extent of the difference between samples, nor does it show any characteristics representing the difference). This standard applies only to samples of the same type. This standard applies to the following cases: a) Determination - produces a perceivable difference (three-point difference test); - does not produce a perceivable difference (three-point similarity test). For example: when there is a change in ingredients, process, packaging, transportation or storage. b) Selection, training and testing of evaluators This standard is statistically more effective than the two-three point test (specified by GB/T 17321), but it is limited to products with strong aftertaste and (or) long-lasting taste.

GB/T 12311-2012 Referenced Document

GB/T 10220 Sensory analysis.Methodology.General guidance
GB/T 10221 Sensory analysis—Vocabulary*， 2021-10-11 Update
GB/T 13868 Sensory analysis.General guidance for the design of test rooms
GB/T 16291.2 Sensory analysis--General guidance for the selection, training and monitoring of assessors--Part 2:Expert sensory assessors
GB/T 17321 Sensory analysis method.Duo-trio test