Format The kit consists of two recombinant hydrolytic enzymes: Exonuclease-I and Shrimp Alkaline Phosphatase. Together they eliminate all unwanted dNTP’s and residual primers from your PCR products, which would interfere with downstream applications 100% Sample recovey With ExS-Pure™ there is no need for time-consuming gel, column or magnetic bead purifications. Both short and long stranded PCR products are left completely intact