Carbon powder was produced by a pulsed arc ignited between two carbon electrodes submerged in ethanol, and was comprised of both micro- and nano-particles. The measured magnetic properties of the mixed “raw” powder at 20 and 300K were: saturation magnetization M s ∼0.90–0.93emu/g, residual magnetization M r =0.022 and 0.018emu/g, and coercive force H c =11 and 8Oe, respectively. The data lead to conclusion that the powder consisted of ferromagnetic particles with a critical temperature much higher than 300K. Magnetic particles in solution were separated by means of bio-ferrography. It was found that the magnetically separated particles included chains of ∼30–50nm diameter spheres, and nanotubes and nanorods with lengths of 50–250nm and diameters of 20–30nm. In contrast, the residual particles which passed through the bio-ferrograph consisted of 1μm and larger micro-particles, and nano-particles without any definite shape.