The HiYield ™ Gel / PCR DNA Fragments Extraction Kit is
designed to recover or concentrate DNA fragments (50bp - 10Kb) from agarose
gels, PCR or other enzymatic reactions. The unique dual purpose application and
high yield DNA / minicolumn make this kit exceptional value. The method uses a
chaotropic salt , guanidine thiocyanate to dissolve agarose gel and denature
enzymes. DNA fragments in chaotropic salt solution bind to the glass fiber
matrix of the spin column. Following washing off contaminants, the purified DNA
fragments are eluted by addition of low salt elution buffer or water. Salts,
enzymes and unincorporated nucleotides are effectively removed from reaction
mixtures without phenol extraction or alcohol precipitation .