Plasmid DNA Extraction Kit provides a fast, phenol-free method for the extraction of high-purity plasmid DNA from bacterial cultures. a column-type tube is utilized in the purification process and extraction is carried out in three simple steps of binding/washing/elution. This technology is based on binding DNA to silica-based membranes in chaotropic salts, washing DNA with wash buffer and then elute the purified plasmid DNA by adding elution buffer. The extracted DNA is ready for the downstream applications such as sequencing, sub-cloning, gene expression, and transfection.
You can also refer to Plasmid extraction maxi kit.