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ASTM D4055-04

Current Revision

Standard Test Method for Pentane Insolubles by Membrane Filtration

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1.1 This test method covers the determination of pentane insolubles for particles exceeding 0.8 μm in new and used lubricating oils.

Note 1—Pentane insolubles with particle sizes less than 0.8 μm may be studied with appropriate size membrane filters. Particle sizes above or below 0.8 μm can be studied. The precision of this test method has been determined only at 0.8 μm.

1.2 The values stated in SI units are to be regarded as the standard.

1.3 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 and health practices and determine the applicability of regulatory limitations prior to use. For specific warning statements, see 7.1, 8.2.1, and Annex A1.


Pentane insolubles above 0.8 μm in size may lead to increased wear. This increased wear can lead to premature equipment failure in critical applications.

SDO ASTM: ASTM International
Document Number D4055
Publication Date May 1, 2004
Language en - English
Page Count 3
Revision Level 04
Supercedes
Committee D02.06
Publish Date Document Id Type View
May 1, 2004 D4055-04 Revision
Dec. 10, 2002 D4055-02 Revision
Nov. 10, 2001 D4055-97 Revision
Nov. 10, 2001 D4055-01 Revision
Jan. 1, 2019 D4055-04R19 Reaffirmation
Oct. 1, 2013 D4055-04R13 Reaffirmation
April 15, 2009 D4055-04R09 Reaffirmation