The "Extraction buffer" helps in ... be used to remove these contaminants, leaving the DNA in a pure form. The standard way to de-proteinize a cell extract is to add phenol or a 1:1 mixture of ...

Potential contaminants include: proteins, RNA, chromosomal DNA, non-specific PCR products, residual salts, organic chemicals (i.e. phenol, chloroform or ethanol), residual detergents, as well as ...