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ASTM D4898-23

Current Revision

Standard Test Method for Insoluble Contamination of Hydraulic Fluids by Gravimetric Analysis

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1.1 This test method covers the determination of insoluble contamination in hydraulic fluids by gravimetric analysis. The contamination determined includes both particulate and gel-like matter, organic and inorganic, which is retained on a membrane filter disk of pore diameter as required by applicable specifications (usually 0.45 μm or 0.80 μm).

1.2 To indicate the nature and distribution of the particulate contamination, the gravimetric method should be supplemented by occasional particle counts of typical samples in accordance with Test Method F312.

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For a specific warning statement, see 7.1.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


5.1 This test method indicates and measures the amount of insoluble contamination of hydraulic fluids. Minimizing the levels of insoluble contamination of hydraulic fluids is essential for the satisfactory performance and long life of the equipment. Insoluble contamination can not only plug filters but can damage functional system components resulting in wear and eventual system failure.

SDO ASTM: ASTM International
Document Number D4898
Publication Date Dec. 1, 2023
Language en - English
Page Count 4
Revision Level 23
Supercedes
Committee D02.N0
Publish Date Document Id Type View
Dec. 1, 2023 D4898-23 Revision
Jan. 1, 2016 D4898-16 Revision
Oct. 1, 2010 D4898-90R10E01 Revision
April 10, 2000 D4898-90R00E01 Revision
Oct. 1, 2010 D4898-90R10 Reaffirmation
May 1, 2005 D4898-90R05 Reaffirmation