Available in 30% or the popular 40% concentration, our stock solutions are ideal for the separation of double stranded DNA fragments. AccuGel 19:1 is best suited for the range of molecular size less than 100 bp, while AccuGel 29:1 is best suited for fragments between 100 and 1000 bp. With the addition of urea, AccuGel solutions will also formulate superior sequencing gels.