Highly perfect single crystal whiskers of Lu5Ir4Si10 were successfully grown out of the melt. Details of the surface and morphology of the whiskers are presented. X-ray diffraction data confirmed that the whisker structure has the same tetragonal P4/mbm.space group symmetry as bulk single crystals with lattice parameters a=12.484(1) and c=4.190(2) angstrom. By means of field emission scanning electron microscopy, the morphology of the whiskers has been studied. Using a 4-circle X-ray diffractometer we found that whiskers grow along the c-axis direction and all side faces are oriented along the [1 1 0] direction. The mosaicity has been measured and is found to be almost perfect: below 0.15 degrees along the c-axis. According to our transport measurements performed along the c-axis, the whiskers present a sharp superconducting transition at T-c=4.1 K and show a charge density wave (CDW) transition at 77 K. From the hysteresis of the temperature dependance of the electrical resistivity study, the COW transition is found to be of first order. (C) 2010 Elsevier B.V. All rights reserved.