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ASTM F862-93(2002)

Historical Revision

Standard Practice for pH and Chloride-ion Concentration of Aerospace Hydraulic Fluids

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1.1 This test method covers the measurement of the pH and chloride ion of water extraction of aerospace hydraulic fluids.

1.2 This standard does not purport to address all of the safety problems, 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.


On application of the hydraulic fluid within the mechanical fluidic system, the fluid may become contaminated with acid and chloride ion. Mechanical shearing of the hydraulic fluid in the presence of the minute quantity of water and residual amount of organic solvents, used in cleaning, may initiate formation of acid and chloride ion. Measurements are desired to control and maintain the cleanliness and noncorrosiveness of the fluidic system.

SDO ASTM: ASTM International
Document Number F862
Publication Date Jan. 15, 1993
Language en - English
Page Count 2
Revision Level 93(2002)
Supercedes
Committee F07.07
Publish Date Document Id Type View
Dec. 1, 2011 F0862-11 Revision
Jan. 15, 1993 F0862-93R02 Revision
May 1, 2022 F0862-11R22 Reaffirmation
June 1, 2017 F0862-11R17 Reaffirmation
Jan. 15, 1993 F0862-93R98 Reaffirmation