Characteristics and graphical user interface to new dose calibrator.

The  dose  calibrator  is  intended   to measure  the  activity   of  a  radioactive  source  of  a known  isotope.  The new instrument is capable of measuring a current of less than one picoampere. The graphical user interface developed to new dose calibrator uses the human centered design approach, under guidance from LABUCH (LaboratA³rio de Usabilidade e Confiabilidade Humana) of IEN.