Standard Practice for Processing Aerospace Liquid Samples for Particulate Contamination Analysis Using Membrane Filters

This method provides for the processing of liquid samples obtained in accordance with Practice F302 and Practices F303. It will provide the optimum sample processing for visual contamination methods such as Method F312, and Test Method F314.

Analysis Type (Application Method): Particle contamination analysis using membrane filters

Link to ASTM® F311:08 Method

Compatible Filters:

47 mm vacuum glassware (or stainless) plus accessories. Gridded membrane, black or white, pore size no greater than 1/2 the smallest particle size of those being counted, and chemically compatible with solvents being used. Common is 0.45 μm or 0.8 μm MCE. Forceps to handle filter membrane.


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