ASTM-F1170 › Historical Revision Information
Standard Practice for Determining the Performance of a Filter Medium Using Water and Siliceous Particles (Withdrawn 2002)
Show Complete Document History
The following bibliographic material is provided to assist you with your purchasing decision:
1.2 Potable water is selected as the present test liquid simply because of its availability and of its ease of use and disposal. It is of course recognized, and so stated in the two cited practices, that a given filter medium will perform differently for different fluids. That is, where the performances of two or more different filter media are compared via the present procedure, such a comparison, or ranking, may be seen differently with a different fluid.
1.3 The specification of siliceous particles here means a test dust of the kind offered by AC Spark Plug and by Powder Technology, Inc. These materials have also been referred to as Arizona Road Dust. Since the compositions are essentially quartz, the present procedure specifies "siliceous" particles. These types of test particles are chosen because they are in common use, and because both the fine and the coarse grades contain a broad range of particle sizes. Both grades are rich in small particles, for example, 0.5 [mu]m diameter, and, at the same time, the diameters of the largest particles reach 80 to 200 [mu]m. Which is to say that the investigator who chooses to employ a particle counter to analyze the feed and filtrate streams will be able to learn the efficiency with which the filter medium under study separates many different size particles from the feed stream.
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.
Constant flow test; Filters/filter procedures; Flow and flow rate-filters; Pore size characteristics; Potable water; Siliceous test dust; Viscous permeability; Water; performance of filter medium using water and siliceous particles,; practice,; Performance-filters; filter medium using water and siliceous particles, practice; ICS Number Code 71.040.30 (Chemical reagents)
To find similar documents by ASTM Volume:
To find similar documents by classification:
Aug. 26, 1988