(a) The capacities of lysis buffer N (pH 4 to 10) and elution buffer Q (pH 9) for extracting DNA on DC, using the new protocol. (b) DNA electrophoresis of the related samples (Marker, *lyN4,5,6,7,8,9,10DC; *lyC and the number refers to lysis buffer N and the pH of lysis buffer N). (c) The OD260/OD280 (black) and OD260/OD230 (purple) purity ratios of the related samples. (TIF)</p