# ISO 11171:2016 — Withdrawn and superseded ISO standards For ISO 11171:2016, item title is Hydraulic fluid power — Calibration of automatic particle counters for liquids; status code is 9599; successor is ISO 11171:2020; withdrawn / published date is 2016-10-05, recorded from its source on 2026-08-05. - **Identifier:** ISO 11171:2016 _(verified: appears in the quote below)_ - **Item title:** Hydraulic fluid power — Calibration of automatic particle counters for liquids _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 11171:2020 - **Withdrawn / published date:** 2016-10-05 _(verified: appears in the quote below)_ ## What the source says > 70291,IS,,ISO 11171:2016,Hydraulic fluid power — Calibration of automatic particle counters for liquids,Transmissions hydrauliques — Étalonnage des compteurs automatiques de particules en suspension dans les liquides,2016-10-05,3,['23.100.60'],ISO/TC 131/SC 6,9599,[46573],[72619],"['en','fr']",51,"

ISO 11171:2016 specifies procedures for the following:

a) primary particle-sizing calibration, sensor resolution and counting performance of automatic particle counters (APCs) for liquids capable of analysing bottle samples;

b) secondary particle-sizing calibration using suspensions verified with a primary calibrated APC;

c) establishing acceptable operation and perfor ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).