Used for the accurate quantification of residual plasmid DNA, specifically containing the Kanamycin resistance (KanR) gene, in biopharmaceutical samples. This kit is essential during quality control in the production of recombinant proteins and gene therapies where plasmid DNA is used as a vector. It helps ensure that levels of residual DNA from host cells or expression vectors are within regulatory limits, minimizing the risk of immunogenicity or unintended genetic transfer. The linear design improves quantification precision by mimicking sheared DNA fragments commonly found in purified therapeutic products. Widely applied in vaccine manufacturing, monoclonal antibody production, and viral vector-based therapeutics.