Abstract: The present invention provides a conjugated diene-based polymer composition excellent in rolling resistance, grip performance on a wet road surface, and abrasion resistance when formed into a tire. Also provided is a conjugated diene-based polymer composition containing: 10 to 90 parts by mass of a conjugated diene-based polymer (A) having a glass transition temperature of ?20° C. or more; and 10 to 90 parts by mass of a conjugated diene-based polymer (B) having a glass transition temperature of ?25° C. or less, wherein the conjugated diene-based polymer (A) has an absolute molecular weight, measured by viscosity detector-equipped GPC-light scattering measurement, of 40×104 or more and 5000×104 or less, and a branch number (Bn), measured by the viscosity detector-equipped GPC-light scattering measurement, of 8 or more.

Abstract: A method of washing an object to be processed, using water containing at least either one selected from a hydrogen radical and a carbon radical, and a novel method capable of exerting sufficient washing effect without using chemicals, by a washing apparatus (1, 21, 41) having a processing bath (2, 22) for washing an object to be processed, and a means for supplying the processing bath (2, 22) with water containing at least either one selected from a hydrogen radical and a carbon radical, and an apparatus for the novel method are provided.

Abstract: A method of washing an object to be processed, using water containing at least either one selected from a hydrogen radical and a carbon radical, and a novel method capable of exerting sufficient washing effect without using chemicals, by a washing apparatus having a processing bath for washing an object to be processed, and a means for supplying the processing bath with water containing at least either one selected from a hydrogen radical and a carbon radical, and an apparatus for the novel method are provided.