Abstract: A method is described for characterising a sample comprising at least DNA and/or RNA. The method comprises obtaining a UV-VIS spectroscopic measurement of the sample comprising at least DNA and/or RNA, deriving an absorption parameter based on the UV-VIS spectroscopic measurement, and determining a DNA and/or RNA quantification present in the sample. Determining a DNA and/or RNA quantification thereby comprises taking into account a buffer and/or salt effect on the UV-VIS spectroscopic measurement irrespective of the actual buffer and salt content of the sample, based on said derived absorption parameter and reference spectral data including spectral information for buffer and/or salt effects.

Abstract: A device (100) for assisting in optical characterisation of a sample fluid. The device can comprise a substrate (102) with at least one measurement reservoir (104) adapted for filling with the fluid (106) in a filling direction. The device (100) thereby is adapted for receiving an illumination beam (108) for illuminating the fluid (106) in the at least one measurement reservoir (104). The at least one measurement reservoir is adapted for varying the rate of change of an optical path length of the illumination beam in the fluid. The measurement reservoir properties are adapted for providing information of an optical path length of the illumination beam in the fluid at a plurality of moments during the filling with the fluid. Furthermore a corresponding optical characterisation device is described. The invention also relates to a corresponding method.

Abstract: An optical characterisation system is described for characterising optical material. The system typically comprises a diffractive element (104), a detector (106) and an optical element (102). The optical element (102) thereby typically is adapted for receiving an illumination beam, which may be an illumination response of the material. The optical element (102) typically has a refractive surface for refractively collimating the illumination beam on the diffractive element (104) and a reflective surface for reflecting the diffracted illumination beam on the detector (106). The optical element (102) furthermore is adapted for cooperating with the diffractive element (104) and the detector (106) being positioned at a same side of the optical element (102) opposite to the receiving side for receiving the illumination beam.