Abstract: The disclosure relates to an adapter dimer-specific probe for detecting adapter dimers in a DNA library, the probe being labelled, particularly by a fluorophore, and being designed to bind specifically to a first adapter nucleotide sequence of a first adapter molecule and to a second adapter nucleotide sequence of a second adapter molecule.

Abstract: A method of sequencing a prepared DNA strand includes providing the prepared DNA strand with nucleotides of the types dATP, dCTP, dGTP and/or dTTP, wherein at least one of the types of the nucleotides comprises a predetermined magnetic label. The method further includes placing the prepared DNA strand within a measuring range of a sensor unit comprising an operatively connected magneto-optical transducer unit and an optical sensor and optically exciting the magneto-optical transducer unit. The method continues with acquiring at least one value indicative of a fluorescence signal of the magneto-optical transducer unit, and assigning the acquired value to the at least one type of the nucleotides comprising the predetermined magnetic label.