ASTM D645/D645M-97(2002) PDF

Scope: 1.1 This test method covers the determination of the thickness of paper and paperboard except electrical insulating papers (see Test Methods D 202). 1.1.1 Because of the relatively high pressure 50 kPa [7.3 psi] used in this test method, it may not be suitable for measurement of tissue or other soft or low density materials, because the structure may collapse (decrease in thickness) at the prescribed pressure of 50 kPa. 1.2 The values stated in either SI units or in other units shall be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system must be used independently of the other, without combining values in any way. 1.3 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.

ASTM D645/D645M-97(2002) Referenced Document

ASTM D1968 Standard Terminology Relating to Paper and Paper Products*， 1999-04-21 Update
ASTM D202 Standard Test Methods for Sampling and Testing Untreated Paper Used for Electrical Insulation
ASTM D585 Standard Practice for Sampling and Accepting a Single Lot of Paper, Paperboard, Fiberboard, and Related Product
ASTM D685 Standard Practice for Conditioning Paper and Paper Products for Testing

1997 ASTM D645/D645M-97(2007) Standard Test Method for Thickness of Paper and Paperboard
1997 ASTM D645/D645M-97(2002) Standard Test Method for Thickness of Paper and Paperboard
1997 ASTM D645/D645M-97 Standard Test Method for Thickness of Paper and Paperboard