The kit provides a very simple, fast and inexpensive way to isolate PCR-ready genomic DNA from soil using the genomic DNA buffer set. The simple purification procedure, based on the remarkable selectivity of the Biospin membrane, allows the isolation of high yields of genomic DNA in less than 30 minutes. It does not require expensive equipment, involves only a few steps and completely avoids the use of toxic and dangerous reagents such as phenol and chloroform.