Apex Super Fine Resolution Agarose is a molecular screening agarose which rivals acrylamide in its ability to resolve small DNA fragments less than 1000bp, including AFLPs, STRs and tetranucleotide repeats. It was specifically formulated for applications that require efficient separation of small DNA fragments and PCR products. DNA bands differing in size by only 2% can be resolved in the range of 200 - 1000bp. That's a 4bp resolution capability!