ISO/CD 4021

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

General information

Current stage: 30.98 Effective date: Apr 25, 2025

Originator: ISO

Owner: ISO/TC 131/SC 6

Type: 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