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ASTM D7670-10(2021)

Current Reaffirmation

Standard Practice for Processing In-service Fluid Samples for Particulate Contamination Analysis Using Membrane Filters

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1.1 This practice covers the processing of in-service fluids in preparation for particulate contamination analysis using membrane filters and is limited only by the liquid-to-membrane filter compatibility.

1.2 The practice covers the procedure for filtering a measured volume of liquid through a membrane filter. When this practice is used, the particulate matter will be randomly distributed on the filter surface for subsequent contamination analysis methods.

1.3 The practice describes procedures to allow handling particles in the size range between 2 µm and 1000 μm with minimum losses during handling.

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

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.


4.1 This practice provides for the processing of liquid samples. It will provide the optimum sample processing for visual contamination methods such as Test Methods F312.

SDO ASTM: ASTM International
Document Number D7670
Publication Date Oct. 1, 2021
Language en - English
Page Count 3
Revision Level 10(2021)
Supercedes
Committee D02.96.06
Publish Date Document Id Type View
Oct. 1, 2010 D7670-10 Revision
Oct. 1, 2021 D7670-10R21 Reaffirmation
May 1, 2017 D7670-10R17 Reaffirmation