Polarimetric measurements are a powerful tool in the classification of surface properties, including compositions and structures of porous dust layers of asteroids and other solar system objects. A pilot project was carried out using the Triple Range Imager and Polarimeter (TRIPOL) on the one-meter (LOT) telescope at Lulin Observatory to obtain instrument characteristics essential polarimetric diagnostics of asteroids. We observed number of unpolarized and polarized standard stars and 29 main-belt to asteroids with known taxonomic types (B-, C-, S-, and M-type). Furthermore, we observed a metal-rich object, (16) Psyche in different rotational phase.