Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Comparison of the Efficiency of Polycarbonate and Mixed Cellulose Ester Filters for Use in the Filtration of Water Samples.
Author Brackett, K. A. ; Clark, P. J. ;
CORP Author IT Corp., Cincinnati, OH.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Publisher c1993
Year Published 1993
Report Number EPA-68-C9-0036; EPA/600/J-93/168;
Stock Number PB93-194363
Additional Subjects Asbestos ; Water pollution ; Fluid filtration ; Membranes ; Standards ; Electron microscopy ; Asbestos deposits ; Efficiency ; Carbonates ; Mixtures ; Design criteria ; Esters ; Water pollution sampling ; Test methods ; Quantative analysis ; Specifications ; US EPA ; Reprints ; Drinking water ; Chrysotile fibers ; Cellulose esters
Library Call Number Additional Info Location Last
NTIS  PB93-194363 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 08/23/1993
Collation 6p
The federal standard for the presence of asbestos in drinking water mandates the use of transmission electron microscopy (TEM) as the only acceptable testing method. The July 17, 1992 Federal Register specifies that the analysis for asbestos shall be conducted by the EPA Protocol entitled 'Analytical Method for Determination of Asbestos Fibers in Water' (EPA-600/4-83) developed by Chatfield and Dillon (1), using polycarbonate (PC) membrane filters. A separate document (1993) providing guidance and clarification of the Chatfield method has been peer reviewed, which allows some slight changes to what was originally a research method, but still requires the use of PC filters. A draft of an alternative method using mixed cellulose ester (MCE) membrane filters was recently published in The Microscope (2). The experiment was designed to determine the quantitative differences between the two methods for all fiber lengths as well as for the regulated fibers > or = 10 micrometers in length.