An apparatus for treatment of diagnostic information relating to samples of microbiological material, in which the apparatus comprises at least: a first processor; a first viewing device operatively connected to the first processor; a first software program operating on the first processor and configured for defining at least a first user interface on the first viewing device and for retrieving and visualising, in the first user interface, at least a first datum, or a first plurality of data, relative to a same first examination site; characterised in that the first software program is further configured for retrieving at least a first image of a first support, of a first type, for microbiological culture, which is a Petri dish with a terrain for bacterial culture, relative to a first microbiological sample coming from the first examination site and for enabling selective viewing of at least the first image in the first user interface, the first software program further being configured for retrieving at least a second image of a second support of a second and different type, for microbiological samples, which is a slide for Gram staining of microorganisms, and/or a slide for morphological analysis of microorganisms, relative to a second microbiological sample coming from the first examination site and for enabling selective viewing at least of the second image in the first user interface, in order to enable the user, by means of the first user interface, to make a combined use and evaluation, by means of a simultaneous and contextual or subsequent viewing, of the data relating to the first examination site and of the images relating to the first and the second support correlated to the first examination site. a first processor; a first viewing device operatively connected to the first processor; a first software program operating on the first processor and configured for defining at least a first user interface on the first viewing device and for retrieving and visualising, in the first user interface, at least a first datum, or a first plurality of data, relative to a same first examination site; characterised in that the first software program is further configured for retrieving at least a first image of a first support, of a first type, for microbiological culture, which is a Petri dish with a terrain for bacterial culture, relative to a first microbiological sample coming from the first examination site and for enabling selective viewing of at least the first image in the first user interface, the first software program further being configured for retrieving at least a second image of a second support of a second and different type, for microbiological samples, which is a slide for Gram staining of microorganisms, and/or a slide for morphological analysis of microorganisms, relative to a second microbiological sample coming from the first examination site and for enabling selective viewing at least of the second image in the first user interface, in order to enable the user, by means of the first user interface, to make a combined use and evaluation, by means of a simultaneous and contextual or subsequent viewing, of the data relating to the first examination site and of the images relating to the first and the second support correlated to the first examination site.