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ISO/CD 4021

Hydraulic fluid power — Particulate contamination analysis — Extraction of fluid samples from lines of an operating system

General information

30.98     Apr 25, 2025

ISO

ISO/TC 131/SC 6

International Standard

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

PUBLISHED
ISO 4021:1992

NOW

ABANDON
ISO/CD 4021
30.98 Project deleted
Apr 25, 2025