# ISO 2173:1978 — Withdrawn and superseded ISO standards For ISO 2173:1978, item title is Fruit and vegetable products — Determination of soluble solids content — Refractometric method; status code is 9599; successor is ISO 2173:2003 | ISO/WD 2173; withdrawn / published date is 1978-11-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 2173:1978 _(verified: appears in the quote below)_ - **Item title:** Fruit and vegetable products — Determination of soluble solids content — Refractometric method _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 2173:2003 | ISO/WD 2173 - **Withdrawn / published date:** 1978-11-01 _(verified: appears in the quote below)_ ## What the source says > 6970,IS,,ISO 2173:1978,Fruit and vegetable products — Determination of soluble solids content — Refractometric method,Produits dérivés des fruits et légumes — Détermination du résidu sec soluble — Méthode réfractométrique,1978-11-01,1,['67.080.01'],ISO/TC 34/SC 3,9599,,"[35851,25127]","['en','fr']",4,"
The method is particularly applicable to thick products, to products containing suspendes matter and to products rich in sugars. If the products contain other dissolved substances, the results will be only approximate, nevertheless they may be considered conventionally as the soluble solids content. The principle consists in measuring of the refractive index of a test solution at 20 °C, usin ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).