# ISO 18369-4:2006 — Withdrawn and superseded ISO standards For ISO 18369-4:2006, item title is Ophthalmic optics — Contact lenses — Part 4: Physicochemical properties of contact lens materials; status code is 9599; successor is ISO 18369-4:2017; withdrawn / published date is 2006-08-03, recorded from its source on 2026-08-05. - **Identifier:** ISO 18369-4:2006 _(verified: appears in the quote below)_ - **Item title:** Ophthalmic optics — Contact lenses — Part 4: Physicochemical properties of contact lens materials _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 18369-4:2017 - **Withdrawn / published date:** 2006-08-03 _(verified: appears in the quote below)_ ## What the source says > 34480,IS,,ISO 18369-4:2006,Ophthalmic optics — Contact lenses — Part 4: Physicochemical properties of contact lens materials,Optique ophtalmique — Lentilles de contact — Partie 4: Propriétés physicochimiques des matériaux des lentilles de contact,2006-08-03,1,['11.040.70'],ISO/TC 172/SC 7,9599,"[17797,18390,18391,17796,2861,26921]",[66341],"['en','fr']",30,"

ISO 18369-4:2006 specifies the methods of testing the physicochemical properties of contact lens materials. These are extraction, rigid lens flexure and breakage, oxygen permeability, refractive index and water content.

" ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).