Significance and Use

This practice provides for the processing of liquid samples obtained in accordance with Practice F 302 and Practices F 303 . It will provide the optimum sample processing for visual contamination methods such as Method F 312 , and Test Method F 314.

1. Scope

1.1 This practice covers the processing of liquids 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 and 1000 ? m 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.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D287 Test Method for API Gravity of Crude Petroleum and Petroleum Products (Hydrometer Method)

D1078 Test Method for Distillation Range of Volatile Organic Liquids

D1193 Specification for Reagent Water

D1353 Test Method for Nonvolatile Matter in Volatile Solvents for Use in Paint, Varnish, Lacquer, and Related Products

D1836 Specification for Commercial Hexanes

D2021 Specification for Neutral Detergent, 40 Percent Alkylbenzene Sulfonate Type

F302 Practice for Field Sampling of Aerospace Fluids in Containers

F303 Practices for Sampling for Particles in Aerospace Fluids and Components

F312 Test Methods for Microscopical Sizing and Counting Particles from Aerospace Fluids on Membrane Filters

Keywords

liquid sample handling; membrane filters; particulate contamination; Aerospace particulate contamination; Contamination--aerospace materials/applications; Membrane filters (MF)--aerospace fluids; Particulate contamination (aerospace environments); Specimen preparation (for testing)--aerospace materials;

ICS Code

ICS Number Code 49.035 (Components for aerospace construction)

DOI: 10.1520/F0311-08

ASTM International is a member of CrossRef.

ASTM F311