ASTM F778

ASTM

F

778

2001

Standard Methods for Gas Flow Resistance Testing of Filtration Media

1. Scope

1.1 The flow resistance of any fabricated filter device will depend on the flow resistance of the media used.

1.2 This standard offers procedures sufficient to determine the gas flow characteristics of flat specimens of media used in the filtration process. The methods are extended to include pleated specimens and bulk media as well.

1.3 In all cases, flow rates through the specimen are determined in accordance with procedures outlined in ASME "Fluid Meters." The test fluid is air.

1.4 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems 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

D585 Practice for Sampling and Accepting a Single Lot of Paper, Paperboard, Fiberboard, and Related Product
D685 Method for Conditioning Paper and Paper Products for Testing
D737 Test Method for Air Permeability of Textile Fabrics
D1776 Practice for Conditioning Textiles For Testing
D1777 Method for Measuring Thickness of Textile Materials
D2905 Practice for Statements on Number of Specimens for Textiles
D3574 Test Methods for Flexible Cellular Materials-Slab, Bonded, and Molded Urethane Foams
E105 Practice for Probability Sampling of Materials
E122 Practice for Calculating Sample Size to Estimate, with a Specified Tolerable Error, the Average for a Characteristic of a Lot or Process
D461 Test Methods for Testing Felt
D645 Test for Thickness of Paper and Paperboard
"Fluid Meters," Sixth Edition, 1971

 

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