# ISO 4317:1977 — Withdrawn and superseded ISO standards For ISO 4317:1977, item title is Surface active agents — Determination of water content — Karl Fischer method; status code is 9599; successor is ISO 4317:1991; withdrawn / published date is 1977-08-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 4317:1977 _(verified: appears in the quote below)_ - **Item title:** Surface active agents — Determination of water content — Karl Fischer method _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 4317:1991 - **Withdrawn / published date:** 1977-08-01 _(verified: appears in the quote below)_ ## What the source says > 10186,IS,,ISO 4317:1977,Surface active agents — Determination of water content — Karl Fischer method,Agents de surface — Détermination de la teneur en eau — Méthode de Karl Fischer,1977-08-01,1,['71.100.40'],ISO/TC 91,9599,,[10187],"['en','fr']",3, ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).