1.1 This test method covers the determination of the apparent cell size of rigid cellular plastics by counting the number of cell-wall intersections in a specified distance.
1.2 Procedure A requires the preparation of a thin slice, not more than one half the average cell diameter in thickness, that is mechanically stable. For most rigid cellular plastics this limits the test method to materials with an average cell size of at least
0.2 mm.
1.3 Procedure B is intended for use with materials whose friable nature makes it difficult to obtain a thin slice for viewing.
1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. NOTE 1—The annex to ISO 2896 is technically equivalent to this test method.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM D3576-20 Referenced Document
ASTM D2842 Standard Test Method for Water Absorption of Rigid Cellular Plastics
ASTM D6226 Standard Test Method for Open Cell Content of Rigid Cellular Plastics
ASTM D883 Standard Terminology Relating to Plastics*, 2024-02-01 Update
ASTM E456 Standard Terminology for Relating to Quality and Statistics
ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ISO 2896 Rigid cellular plastics - Determination of water absorption
ASTM D3576-20 history
2020ASTM D3576-20 Standard Test Method for Cell Size of Rigid Cellular Plastics
2015ASTM D3576-15 Standard Test Method for Cell Size of Rigid Cellular Plastics
2004ASTM D3576-04(2010) Standard Test Method for Cell Size of Rigid Cellular Plastics
2004ASTM D3576-04 Standard Test Method for Cell Size of Rigid Cellular Plastics
1998ASTM D3576-98 Standard Test Method for Cell Size of Rigid Cellular Plastics