# ISO 4120:1983 — Withdrawn and superseded ISO standards For ISO 4120:1983, item title is Sensory analysis — Methodology — Triangular test; status code is 9599; successor is ISO/CD 4120 | ISO 4120:2004; withdrawn / published date is 1983-11-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 4120:1983 _(verified: appears in the quote below)_ - **Item title:** Sensory analysis — Methodology — Triangular test _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/CD 4120 | ISO 4120:2004 - **Withdrawn / published date:** 1983-11-01 _(verified: appears in the quote below)_ ## What the source says > 9870,IS,,ISO 4120:1983,Sensory analysis — Methodology — Triangular test,Analyse sensorielle — Méthodologie — Essai triangulaire,1983-11-01,1,['67.240'],ISO/TC 34/SC 12,9599,,"[21314,33495]","['en','fr']",8,"

The method is applicable for revealing slight differences between samples. The differences may concern either all attribute of the samples, the principle consists in simultaneous presentation to the assessors of a set of three samples, two of which are identical. Following testing, written response by the assessors, and interpretation of the replies obtained.

" ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).