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ASTM D257-99(2005)

Historical Reaffirmation

Standard Test Methods for DC Resistance or Conductance of Insulating Materials

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1.1 These test methods cover direct-current procedures for the determination of dc insulation resistance, volume resistance, volume resistivity, surface resistance, and surface resistivity of electrical insulating materials, or the corresponding conductances and conductivities.

1.2 These test methods are not suitable for use in measuring the electrical resistivity/conductivity of moderately conductive materials. Use Test Method D 4496 to evaluate such materials.

1.3 The test methods and procedures appear in the following sections:

1.4 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. For a specific hazard statement, see .


SDO ASTM: ASTM International
Document Number D257
Publication Date Sept. 1, 2005
Language en - English
Page Count 18
Revision Level 99(2005)
Supercedes
Committee D09.12
Publish Date Document Id Type View
April 1, 2014 D0257-14 Revision
May 15, 2007 D0257-07 Revision
Oct. 10, 1999 D0257-99 Revision
Not Available D0257-91 Revision
March 1, 2021 D0257-14R21E01 Reaffirmation
Sept. 1, 2005 D0257-99R05 Reaffirmation