1. Scope 1.1 This test method covers the determination of the specific gravity of soils that pass the 4.75-mm (No. 4) sieve, by means of a pycnometer. When the soil contains particles larger than the 4.75-mm sieve, Test Method C127 shall be used for the material retained on the 4.75-mm sieve and this test method shall be used for the material passing the 4.75-mm sieve. 1.1.1 Two procedures for performing the specific gravity are provided as follows: 1.1.1.1 Method A -Procedure for Oven-Dry Specimens, described in 9.1. 1.1.1.2 Method B -Procedure for Moist Specimens, described in 9.2. The procedure to be used shall be specified by the requesting authority. For specimens of organic soils and highly plastic, fine-grained soils, Procedure B shall be the preferred method. 1.2 When the specific gravity value is to be used in calculations in connection with the hydrometer portion of Test Method D422, it is intended that the specific gravity test be made on that portion of the sample which passes the 2.00-mm (No. 10) sieve. 1.3 The values stated in acceptable metric units are to be regarded as standard. 1.4 This standard does not purport to address all of the safety problems, 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.