This practice establishes the standard procedures (including apparatus, reagents, and materials to be used) for taking samples of airborne particulate matter in a specific area in the aerospace industry, commonly called the cleanroom, where aerospace fluids are handled. This practiced is based on the impingement of particles on a filter membrane using a vacuum technique. The number of air samples required in a given area will depend on the geometric floor area, the disturbance to the uninterrupted airflow pattern, and the room volume.
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1.1 This practice covers a procedure for sampling airborne particulate matter larger than 5 m in size. The method is designed to be used in specific areas, commonly called cleanrooms in the aerospace industry, where aerospace fluids are handled. Note 1
Practice F 50 is an alternative procedure.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D1193 Specification for Reagent Water
D1836 Specification for Commercial Hexanes
D2021 Specification for Neutral Detergent, 40 Percent Alkylbenzene Sulfonate Type
E2042 Practice for Cleaning and Maintaining Controlled Areas and Clean Rooms
F25 Test Method for Sizing and Counting Airborne Particulate Contamination in Cleanrooms and Other Dust-Controlled Areas
F50 Practice for Continuous Sizing and Counting of Airborne Particles in Dust-Controlled Areas and Clean Rooms Using Instruments Capable of Detecting Single Sub-Micrometre and Larger Particles
F312 Test Methods for Microscopical Sizing and Counting Particles from Aerospace Fluids on Membrane Filters
aerospace cleanrooms; airborne contamination; air sampling; contamination; particulate contamination; sampling;
ICS Number Code 13.040.30 (Workplace atmospheres)
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