ASTM-E1343 › Standard Test Method for Molecular Weight Cutoff Evaluation of Flat Sheet Ultrafiltration Membranes
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Scope
1.1 This test method covers the evaluation of the molecular weight cutoff of flat sheet ultrafiltration membranes with cutoffs between 4500 and 1000000 daltons. The nonadsorbing characteristics of the test penetrant utilized by this test method permit the test to be performed on a wide variety of membrane substrates, excluding those which strongly adsorb dextran, from highly hydrophilic to highly hydrophobic. This test method is not applicable for microfiltration membranes with pore sizes of 0.01 µm or larger, nor for reverse osmosis or dialysis membranes with less than 4500 molecular weight cutoff. (It is possible that this test method could be modified to expand the range from 100 to 2 000 000 daltons.) This test method is not applicable to membrane materials that strongly adsorb dextrans since these materials will potentially change the value of the measured molecular weight cutoff and hence will invalidate the test results.
1.2 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.
Keywords
chromatograph; flat sheet ultrafiltration membrane; membrane; molecular weight cutoff
To find similar documents by ASTM Volume:
11.06 (Biological Effects and Environmental Fate; Biotechnology)
To find similar documents by classification:
71.040.20 (Laboratory ware and related apparatus)
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Document Number
ASTM-E1343-90(1997)e1
Revision Level
1990 R97(E1) EDITION
Status
Superseded
Modification Type
Reapproval with Ed Change
Publication Date
April 1, 1997
Document Type
Test Method
Page Count
9 pages
Committee Number
E48.03