Using QIAGEN Genomic-tips
Protocol for DNA cleanup using Genomic-tips can be found in the 'Special Applications' section of the QIAGEN Genomic DNA Handbook.
Using QIAamp DNA Micro kit
Up to 10ug of gDNA can be cleaned using the cleanup protocol in the QIAamp DNA Micro Handbook.
Using Gentra Puregene Reagents
Gentra Puregene Handbook has protocols for removal of proteins and RNA from purified gDNA in Appendix C and Appendix D respectively.