ASTM D3776-09 PDF

1.1 These test methods cover the measurement of fabric mass per unit area (weight) and is applicable to most fabrics.

1.2 There are four approved options:

1.2.1 Option A - Full Piece, Roll, Bolt or Cut (Section 7).

1.2.2 Option B - Full Width Sample (Section 8).

1.2.3 Option C - Small Swatch of Fabric (Section 9).

1.2.4 Option D - Narrow Fabrics (Section 10).

1.3 The values either in SI units or U.S. customary units are regarded as standard. U.S. customary units may be approximate.

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.