1.1 This specification covers four grades of red pigment commercially known as red lead. The pigment may be purchased in the dry form or as a paste in oil. 1.2 The values stated in inch-pound units are to be regarded This specification covers four grades of red pigment commercially known as red lead. The pigment may be purchased in the dry form or as a paste in oil. Chemical analysis and coarse particle shall be tested to meet the requirements prescribed. Pigment,