On behalf of the executive board of the Brazilian Society for Mass Spectrometry - BrMASS- as well as its ca. 3000 members and affiliate MS companies, we are very proud to announce the 6th BrMASS which this time will be organized together with the 1st IbMASS - IberoAmerican Conference on Mass Spectrometry in the marvelous city of Rio de Janeiro - Brazil - Dec 10-11 at the Convention Center of the Barra Windsor Hotel. Please come and join us! It will be one of the largest and most exciting MS conferences ever. See you in Rio!