GB/T 17321-2012 (English Version) PDF

Standard No.: GB/T 17321-2012
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 17321-2012
Replace: GB/T 17321-1998

Scope: This International Standard specifies procedures 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 differences in single or several sensory characteristics. This standard is also applicable when the differential properties are unknown (ie it is not certain how much or how much the samples differ, nor is there any indication of any differential properties). This standard applies only when the products are fairly similar. This standard applies to the following situations: a) Determination - there is a sensory difference (two-three point test for difference); no sensory difference (two-three point test for similarity); for example, when ingredients, processes, packaging, handling or storage When there is a change. b) Two forms of this standard method for selection, training and testing of assessors: - constant reference technique, used when the assessor is familiar with a product (e.g. samples from a fixed production line); - balanced reference technique, Used when the reviewer is no more familiar with one product than another. The statistical validity of this standard is lower than that of the three-point test (see GB/T 12311), but it is easier for the evaluators to implement.

GB/T 17321-2012 Referenced Document

GB/T 10220 Sensory analysis.Methodology.General guidance
GB/T 10221 Sensory analysis—Vocabulary*， 2021-10-11 Update
GB/T 12311 Sensory analysis method.Triangle test
GB/T 13868 Sensory analysis.General guidance for the design of test rooms
GB/T 16291.1 Sensory analysis.General guidance for the selection,training and monitoring of assessors.Part 1:Selected assessors
GB/T 16291.2 Sensory analysis--General guidance for the selection, training and monitoring of assessors--Part 2:Expert sensory assessors