GRS Agarose S-LMT works as a molecular screen and can discriminate between DNA fragments that differ only a few bp in length, and thus is able to compete with acrylamide gels, being much easier to handle as the latter. GRS Agarose S-LMT 3%-6% gels give similar results to polyacrylamide 6%-8% gels. For efficient resolution, the concentration should be adjusted to the range of band sizes analyzed, and the gel running buffer used. At lower concentrations (<2%), gels become fragile and difficult to handle. The low gelling temperature facilitates quantitative recovery of nucleic acids without cutting slices and/or the inclusion of thermo-labile substances, such as living cells or enzymes, in melted agarose.