ISO 4021:1977

For ISO 4021:1977, item title is Hydraulic fluid power — Particulate contamination analysis — Extraction of fluid samples from lines of an operating system; status code is 9599; successor is ISO 4021:1992; withdrawn / published date is 1977-12-01, recorded from its source on 2026-08-05.

Identifier: ISO 4021:1977 verified
Item title: Hydraulic fluid power — Particulate contamination analysis — Extraction of fluid samples from lines of an operating system verified
Status code: 9599 verified
Successor: ISO 4021:1992
Withdrawn / published date: 1977-12-01 verified

Sourceisopublicstorageprod.blob.core.windows.net

Verified2026-08-05

Review by2027-02-01

DatasetWithdrawn and superseded ISO standards

What the source says

9705,IS,,ISO 4021:1977,Hydraulic fluid power — Particulate contamination analysis — Extraction of fluid samples from lines of an operating system,Transmissions hydrauliques — Analyse de la pollution par particules — Prélèvement des échantillons de fluide dans les circuits en fonctionnement,1977-12-01,1,['23.100.60'],ISO/TC 131/SC 8,9599,,[9706],"['en','fr']",2,

— isopublicstorageprod.blob.core.windows.net, retrieved 2026-08-05

Source

isopublicstorageprod.blob.core.windows.nethttps://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified against source: 2026-08-05. Due for re-check by 2027-02-01. This page as Markdown · OKF bundle · full dataset as JSON.