An identification apparatus comprising: a plurality of collecting means for collecting scattered light from a plurality of test items that are irradiated with irradiation light ; one or more light sources; a plurality of irradiation means optically coupled to the one or more light sources and configured to irradiate the plurality of test items with light from the one or more light sources in association with the plurality of collecting means; first spectroscopic means for dispersing scattered light collected by a part of the plurality of collecting means; second spectroscopic means for dispersing scattered light collected by a remaining part of the plurality of collecting means; imaging means including a plurality of light receiving elements and configured for acquiring a first spectrum projected from the first spectroscopic means by reading out output signals of the light receiving elements that receive light from the first spectroscopic means and a second spectrum projected from the second spectroscopic means by reading out output signals of the light receiving elements that receive light from the second spectroscopic means, wherein the plurality of light receiving elements are arranged at least in a first direction ; and acquisition means for acquiring information about the test items based on an output signal from the imaging means, wherein the first spectroscopic means and the second spectroscopic means are configured such that an increase direction of a wavenumber of the first spectrum with respect to addresses of the light receiving elements in the first direction and an increase direction of a wavenumber of the second spectrum with respect to the addresses of the light receiving elements in the first direction are opposite to each other. a plurality of collecting means for collecting scattered light from a plurality of test items that are irradiated with irradiation light ; one or more light sources; a plurality of irradiation means optically coupled to the one or more light sources and configured to irradiate the plurality of test items with light from the one or more light sources in association with the plurality of collecting means; first spectroscopic means for dispersing scattered light collected by a part of the plurality of collecting means; second spectroscopic means for dispersing scattered light collected by a remaining part of the plurality of collecting means; imaging means including a plurality of light receiving elements and configured for acquiring a first spectrum projected from the first spectroscopic means by reading out output signals of the light receiving elements that receive light from the first spectroscopic means and a second spectrum projected from the second spectroscopic means by reading out output signals of the light receiving elements that receive light from the second spectroscopic means, wherein the plurality of light receiving elements are arranged at least in a first direction ; and acquisition means for acquiring information about the test items based on an output signal from the imaging means, wherein the first spectroscopic means and the second spectroscopic means are configured such that an increase direction of a wavenumber of the first spectrum with respect to addresses of the light receiving elements in the first direction and an increase direction of a wavenumber of the second spectrum with respect to the addresses of the light receiving elements in the first direction are opposite to each other. <EOS>