PCR-M® Clean Up System Can Only Effectively (>90%) Removes Primers Of Less Than 40-Bp. When Primers Or Dimer Products Are Of More Than 40-Bp, They Cannot Be Effectively Removed. In This Case, Separate The PCR Product From The Dimer Products By Electrophoresis, Excise The Gel Slice Containing The Desired Product And Purify It Using Immunoport Gel-M® Gel Extraction System.