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DNA Migration in Agarose and Polyacrylamide Gels

Recommended Gel Percentages for Separation of Linear DNA

Agarose gel %     Range of separation (bp)
0.5 1,000-30,000
0.7 800-12,000
1.0 500-10,000
1.2 400-7,000
1.4 200-4,000
2.0  50-2,000

Polyacrylamide gel % Range of separation (bp)
3.5 100-1,000
5.0 80-500
8.0 60-400
12.0 40-200
20.0 5-100