Next, a third reagent is added to the tube or vessel, to wash the excess proteins, salts and other debris from the filter-bound DNA. One example of a suitable third reagent is a 75% Ethanol solution composed of the following reagents in the following proportions: 525 ml of 100% Ethanol (200 proof AAPER Alcohol & Chemical Co., DSP-KY 417); 175 ml sterile H2O. Next, a vacuum is applied to remove the