The invention relates to a method for filtering nucleic acids, to a kit for carrying out the method according to the invention and to a novel use of magnetic particles for filtering a biological sample. traffic data and has a prescribed finite time interval and bandwidth. The group of inventions has fastening elements, which are fastened on teeth of dentition’s lateral segments and executed in the form of metal wireframes clasping teeth of dentition’s lateral segments, and connected with two plates located on both sides of median palatine suture and connected with each other by the metal wire palatal power element or elements. Electromagnetic radiation which has interacted with the contents is received.