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ISO 4021:1992

Hydraulic fluid power — Particulate contamination analysis — Extraction of fluid samples from lines of an operating system ISO 4021:1992

Publication date:   Oct 21, 1992

General information

90.92 Standard to be revised   Mar 6, 2023

ISO

ISO/TC 131/SC 6 Contamination control

International Standard

23.100.60   Filters, seals and contamination of fluids

Buying

Published

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Scope

The preferred method is to extract fluid samples from a main flowline in such a manner that the particulate contaminant in the sample is representative of the fluid flowing at the point of sampling. An alternative method is to extract a sample from the reservoir, but this method should only be used if a suitable sampler is not fitted.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 4021:1977

NOW

PUBLISHED
ISO 4021:1992
90.92 Standard to be revised
Mar 6, 2023

REVISED BY

ABANDON
ISO/PWI 4021

ABANDON
ISO/NP 4021

IN_DEVELOPMENT
ISO/WD 4021